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{
"name": "awesome-deepseek-integration",
"lockfileVersion": 3,
"requires": true,
"packages": {
"node_modules/csv-parse": {
"version": "5.6.0",
"resolved": "https://registry.npmjs.org/csv-parse/-/csv-parse-5.6.0.tgz",
"integrity": "sha512-l3nz3euub2QMg5ouu5U09Ew9Wf6/wQ8I++ch1loQ0ljmzhmfZYrH9fflS22i/PQEvsPvxCwxgz5q7UB8K1JO4Q==",
"license": "MIT"
}
}
}

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The MIT License (MIT)
Copyright (c) 2010 Adaltas
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# CSV parser for Node.js and the web
[![Build Status](https://img.shields.io/github/actions/workflow/status/adaltas/node-csv/nodejs.yml?branch=master)](https://github.com/adaltas/node-csv/actions)
[![NPM](https://img.shields.io/npm/dm/csv-parse)](https://www.npmjs.com/package/csv-parse)
[![NPM](https://img.shields.io/npm/v/csv-parse)](https://www.npmjs.com/package/csv-parse)
The [`csv-parse` package](https://csv.js.org/parse/) is a parser converting CSV text input into arrays or objects. It is part of the [CSV project](https://csv.js.org/).
It implements the Node.js [`stream.Transform` API](http://nodejs.org/api/stream.html#stream_class_stream_transform). It also provides a simple callback-based API for convenience. It is both extremely easy to use and powerful. It was first released in 2010 and is used against big data sets by a large community.
## Documentation
- [Project homepage](https://csv.js.org/parse/)
- [API](https://csv.js.org/parse/api/)
- [Options](https://csv.js.org/parse/options/)
- [Info properties](https://csv.js.org/parse/info/)
- [Common errors](https://csv.js.org/parse/errors/)
- [Examples](https://csv.js.org/project/examples/)
## Main features
- Flexible with lot of [options](https://csv.js.org/parse/options/)
- Multiple [distributions](https://csv.js.org/parse/distributions/): Node.js, Web, ECMAScript modules and CommonJS
- Follow the Node.js streaming API
- Simplicity with the optional callback API
- Support delimiters, quotes, escape characters and comments
- Line breaks discovery
- Support big datasets
- Complete test coverage and lot of samples for inspiration
- No external dependencies
- Work nicely with the [csv-generate](https://csv.js.org/generate/), [stream-transform](https://csv.js.org/transform/) and [csv-stringify](https://csv.js.org/stringify/) packages
- MIT License
## Usage
Run `npm install csv` to install the full CSV module or run `npm install csv-parse` if you are only interested by the CSV parser.
Use the callback and sync APIs for simplicity or the stream based API for scalability.
## Example
The [API](https://csv.js.org/parse/api/) is available in multiple flavors. This example illustrates the stream API.
```js
import assert from "assert";
import { parse } from "csv-parse";
const records = [];
// Initialize the parser
const parser = parse({
delimiter: ":",
});
// Use the readable stream api to consume records
parser.on("readable", function () {
let record;
while ((record = parser.read()) !== null) {
records.push(record);
}
});
// Catch any error
parser.on("error", function (err) {
console.error(err.message);
});
// Test that the parsed records matched the expected records
parser.on("end", function () {
assert.deepStrictEqual(records, [
["root", "x", "0", "0", "root", "/root", "/bin/bash"],
["someone", "x", "1022", "1022", "", "/home/someone", "/bin/bash"],
]);
});
// Write data to the stream
parser.write("root:x:0:0:root:/root:/bin/bash\n");
parser.write("someone:x:1022:1022::/home/someone:/bin/bash\n");
// Close the readable stream
parser.end();
```
## Contributors
The project is sponsored by [Adaltas](https://www.adaltas.com), an Big Data consulting firm based in Paris, France.
- David Worms: <https://github.com/wdavidw>

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// Original definitions in https://github.com/DefinitelyTyped/DefinitelyTyped by: David Muller <https://github.com/davidm77>
/// <reference types="node" />
import * as stream from "stream";
export type Callback = (err: CsvError | undefined, records: any | undefined, info: Info) => void;
export interface Parser extends stream.Transform {}
export class Parser {
constructor(options: Options);
__push(line: any): any;
__write(chars: any, end: any, callback: any): any;
readonly options: Options
readonly info: Info;
}
export interface CastingContext {
readonly column: number | string;
readonly empty_lines: number;
readonly error: CsvError;
readonly header: boolean;
readonly index: number;
readonly quoting: boolean;
readonly lines: number;
readonly records: number;
readonly invalid_field_length: number;
}
export type CastingFunction = (value: string, context: CastingContext) => any;
export type CastingDateFunction = (value: string, context: CastingContext) => Date;
export type ColumnOption = string | undefined | null | false | { name: string };
/*
Note, could not `extends stream.TransformOptions` because encoding can be
BufferEncoding and undefined as well as null which is not defined in the
extended type.
*/
export interface Options {
/**
* If true, the parser will attempt to convert read data types to native types.
* @deprecated Use {@link cast}
*/
auto_parse?: boolean | CastingFunction;
autoParse?: boolean | CastingFunction;
/**
* If true, the parser will attempt to convert read data types to dates. It requires the "auto_parse" option.
* @deprecated Use {@link cast_date}
*/
auto_parse_date?: boolean | CastingDateFunction;
autoParseDate?: boolean | CastingDateFunction;
/**
* If true, detect and exclude the byte order mark (BOM) from the CSV input if present.
*/
bom?: boolean;
/**
* If true, the parser will attempt to convert input string to native types.
* If a function, receive the value as first argument, a context as second argument and return a new value. More information about the context properties is available below.
*/
cast?: boolean | CastingFunction;
/**
* If true, the parser will attempt to convert input string to dates.
* If a function, receive the value as argument and return a new value. It requires the "auto_parse" option. Be careful, it relies on Date.parse.
*/
cast_date?: boolean | CastingDateFunction;
castDate?: boolean | CastingDateFunction;
/**
* List of fields as an array,
* a user defined callback accepting the first line and returning the column names or true if autodiscovered in the first CSV line,
* default to null,
* affect the result data set in the sense that records will be objects instead of arrays.
*/
columns?: ColumnOption[] | boolean | ((record: any) => ColumnOption[]);
/**
* Convert values into an array of values when columns are activated and
* when multiple columns of the same name are found.
*/
group_columns_by_name?: boolean;
groupColumnsByName?: boolean;
/**
* Treat all the characters after this one as a comment, default to '' (disabled).
*/
comment?: string;
/**
* Restrict the definition of comments to a full line. Comment characters
* defined in the middle of the line are not interpreted as such. The
* option require the activation of comments.
*/
comment_no_infix?: boolean;
/**
* Set the field delimiter. One character only, defaults to comma.
*/
delimiter?: string | string[] | Buffer;
/**
* Set the source and destination encoding, a value of `null` returns buffer instead of strings.
*/
encoding?: BufferEncoding | undefined;
/**
* Set the escape character, one character only, defaults to double quotes.
*/
escape?: string | null | false | Buffer;
/**
* Start handling records from the requested number of records.
*/
from?: number;
/**
* Start handling records from the requested line number.
*/
from_line?: number;
fromLine?: number;
/**
* Don't interpret delimiters as such in the last field according to the number of fields calculated from the number of columns, the option require the presence of the `column` option when `true`.
*/
ignore_last_delimiters?: boolean | number;
/**
* Generate two properties `info` and `record` where `info` is a snapshot of the info object at the time the record was created and `record` is the parsed array or object.
*/
info?: boolean;
/**
* If true, ignore whitespace immediately following the delimiter (i.e. left-trim all fields), defaults to false.
* Does not remove whitespace in a quoted field.
*/
ltrim?: boolean;
/**
* Maximum numer of characters to be contained in the field and line buffers before an exception is raised,
* used to guard against a wrong delimiter or record_delimiter,
* default to 128000 characters.
*/
max_record_size?: number;
maxRecordSize?: number;
/**
* Name of header-record title to name objects by.
*/
objname?: string;
/**
* Alter and filter records by executing a user defined function.
*/
on_record?: (record: any, context: CastingContext) => any;
onRecord?: (record: any, context: CastingContext) => any;
/**
* Optional character surrounding a field, one character only, defaults to double quotes.
*/
quote?: string | boolean | Buffer | null;
/**
* Generate two properties raw and row where raw is the original CSV row content and row is the parsed array or object.
*/
raw?: boolean;
/**
* Discard inconsistent columns count, default to false.
*/
relax_column_count?: boolean;
relaxColumnCount?: boolean;
/**
* Discard inconsistent columns count when the record contains less fields than expected, default to false.
*/
relax_column_count_less?: boolean;
relaxColumnCountLess?: boolean;
/**
* Discard inconsistent columns count when the record contains more fields than expected, default to false.
*/
relax_column_count_more?: boolean;
relaxColumnCountMore?: boolean;
/**
* Preserve quotes inside unquoted field.
*/
relax_quotes?: boolean;
relaxQuotes?: boolean;
/**
* One or multiple characters used to delimit record rows; defaults to auto discovery if not provided.
* Supported auto discovery method are Linux ("\n"), Apple ("\r") and Windows ("\r\n") row delimiters.
*/
record_delimiter?: string | string[] | Buffer | Buffer[];
recordDelimiter?: string | string[] | Buffer | Buffer[];
/**
* If true, ignore whitespace immediately preceding the delimiter (i.e. right-trim all fields), defaults to false.
* Does not remove whitespace in a quoted field.
*/
rtrim?: boolean;
/**
* Dont generate empty values for empty lines.
* Defaults to false
*/
skip_empty_lines?: boolean;
skipEmptyLines?: boolean;
/**
* Skip a line with error found inside and directly go process the next line.
*/
skip_records_with_error?: boolean;
skipRecordsWithError?: boolean;
/**
* Don't generate records for lines containing empty column values (column matching /\s*\/), defaults to false.
*/
skip_records_with_empty_values?: boolean;
skipRecordsWithEmptyValues?: boolean;
/**
* Stop handling records after the requested number of records.
*/
to?: number;
/**
* Stop handling records after the requested line number.
*/
to_line?: number;
toLine?: number;
/**
* If true, ignore whitespace immediately around the delimiter, defaults to false.
* Does not remove whitespace in a quoted field.
*/
trim?: boolean;
}
export interface Info {
/**
* Count the number of lines being fully commented.
*/
readonly comment_lines: number;
/**
* Count the number of processed empty lines.
*/
readonly empty_lines: number;
/**
* The number of lines encountered in the source dataset, start at 1 for the first line.
*/
readonly lines: number;
/**
* Count the number of processed records.
*/
readonly records: number;
/**
* Count of the number of processed bytes.
*/
readonly bytes: number;
/**
* Number of non uniform records when `relax_column_count` is true.
*/
readonly invalid_field_length: number;
/**
* Normalized verion of `options.columns` when `options.columns` is true, boolean otherwise.
*/
readonly columns: boolean | { name: string }[] | { disabled: true }[];
}
export type CsvErrorCode =
'CSV_INVALID_OPTION_BOM'
| 'CSV_INVALID_OPTION_CAST'
| 'CSV_INVALID_OPTION_CAST_DATE'
| 'CSV_INVALID_OPTION_COLUMNS'
| 'CSV_INVALID_OPTION_GROUP_COLUMNS_BY_NAME'
| 'CSV_INVALID_OPTION_COMMENT'
| 'CSV_INVALID_OPTION_DELIMITER'
| 'CSV_INVALID_OPTION_ON_RECORD'
| 'CSV_INVALID_CLOSING_QUOTE'
| 'INVALID_OPENING_QUOTE'
| 'CSV_INVALID_COLUMN_MAPPING'
| 'CSV_INVALID_ARGUMENT'
| 'CSV_INVALID_COLUMN_DEFINITION'
| 'CSV_MAX_RECORD_SIZE'
| 'CSV_NON_TRIMABLE_CHAR_AFTER_CLOSING_QUOTE'
| 'CSV_QUOTE_NOT_CLOSED'
| 'CSV_RECORD_INCONSISTENT_FIELDS_LENGTH'
| 'CSV_RECORD_INCONSISTENT_COLUMNS'
| 'CSV_OPTION_COLUMNS_MISSING_NAME'
export class CsvError extends Error {
readonly code: CsvErrorCode;
[key: string]: any;
constructor(code: CsvErrorCode, message: string | string[], options?: Options, ...contexts: any[]);
}
declare function parse(input: Buffer | string, options?: Options, callback?: Callback): Parser;
declare function parse(input: Buffer | string, callback?: Callback): Parser;
declare function parse(options?: Options, callback?: Callback): Parser;
declare function parse(callback?: Callback): Parser;
// export default parse;
export { parse }

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import { Options } from './index.cjs';
declare function parse(input: Buffer | string, options?: Options): any;
// export default parse;
export { parse };
export {
CastingContext, CastingFunction, CastingDateFunction,
ColumnOption, Options, Info, CsvErrorCode, CsvError
} from './index.cjs';

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// Original definitions in https://github.com/DefinitelyTyped/DefinitelyTyped by: David Muller <https://github.com/davidm77>
/// <reference types="node" />
import * as stream from "stream";
export type Callback = (err: CsvError | undefined, records: any | undefined, info: Info) => void;
export interface Parser extends stream.Transform {}
export class Parser {
constructor(options: Options);
__push(line: any): any;
__write(chars: any, end: any, callback: any): any;
readonly options: Options
readonly info: Info;
}
export interface CastingContext {
readonly column: number | string;
readonly empty_lines: number;
readonly error: CsvError;
readonly header: boolean;
readonly index: number;
readonly quoting: boolean;
readonly lines: number;
readonly records: number;
readonly invalid_field_length: number;
}
export type CastingFunction = (value: string, context: CastingContext) => any;
export type CastingDateFunction = (value: string, context: CastingContext) => Date;
export type ColumnOption = string | undefined | null | false | { name: string };
/*
Note, could not `extends stream.TransformOptions` because encoding can be
BufferEncoding and undefined as well as null which is not defined in the
extended type.
*/
export interface Options {
/**
* If true, the parser will attempt to convert read data types to native types.
* @deprecated Use {@link cast}
*/
auto_parse?: boolean | CastingFunction;
autoParse?: boolean | CastingFunction;
/**
* If true, the parser will attempt to convert read data types to dates. It requires the "auto_parse" option.
* @deprecated Use {@link cast_date}
*/
auto_parse_date?: boolean | CastingDateFunction;
autoParseDate?: boolean | CastingDateFunction;
/**
* If true, detect and exclude the byte order mark (BOM) from the CSV input if present.
*/
bom?: boolean;
/**
* If true, the parser will attempt to convert input string to native types.
* If a function, receive the value as first argument, a context as second argument and return a new value. More information about the context properties is available below.
*/
cast?: boolean | CastingFunction;
/**
* If true, the parser will attempt to convert input string to dates.
* If a function, receive the value as argument and return a new value. It requires the "auto_parse" option. Be careful, it relies on Date.parse.
*/
cast_date?: boolean | CastingDateFunction;
castDate?: boolean | CastingDateFunction;
/**
* List of fields as an array,
* a user defined callback accepting the first line and returning the column names or true if autodiscovered in the first CSV line,
* default to null,
* affect the result data set in the sense that records will be objects instead of arrays.
*/
columns?: ColumnOption[] | boolean | ((record: any) => ColumnOption[]);
/**
* Convert values into an array of values when columns are activated and
* when multiple columns of the same name are found.
*/
group_columns_by_name?: boolean;
groupColumnsByName?: boolean;
/**
* Treat all the characters after this one as a comment, default to '' (disabled).
*/
comment?: string;
/**
* Restrict the definition of comments to a full line. Comment characters
* defined in the middle of the line are not interpreted as such. The
* option require the activation of comments.
*/
comment_no_infix?: boolean;
/**
* Set the field delimiter. One character only, defaults to comma.
*/
delimiter?: string | string[] | Buffer;
/**
* Set the source and destination encoding, a value of `null` returns buffer instead of strings.
*/
encoding?: BufferEncoding | undefined;
/**
* Set the escape character, one character only, defaults to double quotes.
*/
escape?: string | null | false | Buffer;
/**
* Start handling records from the requested number of records.
*/
from?: number;
/**
* Start handling records from the requested line number.
*/
from_line?: number;
fromLine?: number;
/**
* Don't interpret delimiters as such in the last field according to the number of fields calculated from the number of columns, the option require the presence of the `column` option when `true`.
*/
ignore_last_delimiters?: boolean | number;
/**
* Generate two properties `info` and `record` where `info` is a snapshot of the info object at the time the record was created and `record` is the parsed array or object.
*/
info?: boolean;
/**
* If true, ignore whitespace immediately following the delimiter (i.e. left-trim all fields), defaults to false.
* Does not remove whitespace in a quoted field.
*/
ltrim?: boolean;
/**
* Maximum numer of characters to be contained in the field and line buffers before an exception is raised,
* used to guard against a wrong delimiter or record_delimiter,
* default to 128000 characters.
*/
max_record_size?: number;
maxRecordSize?: number;
/**
* Name of header-record title to name objects by.
*/
objname?: string;
/**
* Alter and filter records by executing a user defined function.
*/
on_record?: (record: any, context: CastingContext) => any;
onRecord?: (record: any, context: CastingContext) => any;
/**
* Optional character surrounding a field, one character only, defaults to double quotes.
*/
quote?: string | boolean | Buffer | null;
/**
* Generate two properties raw and row where raw is the original CSV row content and row is the parsed array or object.
*/
raw?: boolean;
/**
* Discard inconsistent columns count, default to false.
*/
relax_column_count?: boolean;
relaxColumnCount?: boolean;
/**
* Discard inconsistent columns count when the record contains less fields than expected, default to false.
*/
relax_column_count_less?: boolean;
relaxColumnCountLess?: boolean;
/**
* Discard inconsistent columns count when the record contains more fields than expected, default to false.
*/
relax_column_count_more?: boolean;
relaxColumnCountMore?: boolean;
/**
* Preserve quotes inside unquoted field.
*/
relax_quotes?: boolean;
relaxQuotes?: boolean;
/**
* One or multiple characters used to delimit record rows; defaults to auto discovery if not provided.
* Supported auto discovery method are Linux ("\n"), Apple ("\r") and Windows ("\r\n") row delimiters.
*/
record_delimiter?: string | string[] | Buffer | Buffer[];
recordDelimiter?: string | string[] | Buffer | Buffer[];
/**
* If true, ignore whitespace immediately preceding the delimiter (i.e. right-trim all fields), defaults to false.
* Does not remove whitespace in a quoted field.
*/
rtrim?: boolean;
/**
* Dont generate empty values for empty lines.
* Defaults to false
*/
skip_empty_lines?: boolean;
skipEmptyLines?: boolean;
/**
* Skip a line with error found inside and directly go process the next line.
*/
skip_records_with_error?: boolean;
skipRecordsWithError?: boolean;
/**
* Don't generate records for lines containing empty column values (column matching /\s*\/), defaults to false.
*/
skip_records_with_empty_values?: boolean;
skipRecordsWithEmptyValues?: boolean;
/**
* Stop handling records after the requested number of records.
*/
to?: number;
/**
* Stop handling records after the requested line number.
*/
to_line?: number;
toLine?: number;
/**
* If true, ignore whitespace immediately around the delimiter, defaults to false.
* Does not remove whitespace in a quoted field.
*/
trim?: boolean;
}
export interface Info {
/**
* Count the number of lines being fully commented.
*/
readonly comment_lines: number;
/**
* Count the number of processed empty lines.
*/
readonly empty_lines: number;
/**
* The number of lines encountered in the source dataset, start at 1 for the first line.
*/
readonly lines: number;
/**
* Count the number of processed records.
*/
readonly records: number;
/**
* Count of the number of processed bytes.
*/
readonly bytes: number;
/**
* Number of non uniform records when `relax_column_count` is true.
*/
readonly invalid_field_length: number;
/**
* Normalized verion of `options.columns` when `options.columns` is true, boolean otherwise.
*/
readonly columns: boolean | { name: string }[] | { disabled: true }[];
}
export type CsvErrorCode =
'CSV_INVALID_OPTION_BOM'
| 'CSV_INVALID_OPTION_CAST'
| 'CSV_INVALID_OPTION_CAST_DATE'
| 'CSV_INVALID_OPTION_COLUMNS'
| 'CSV_INVALID_OPTION_GROUP_COLUMNS_BY_NAME'
| 'CSV_INVALID_OPTION_COMMENT'
| 'CSV_INVALID_OPTION_DELIMITER'
| 'CSV_INVALID_OPTION_ON_RECORD'
| 'CSV_INVALID_CLOSING_QUOTE'
| 'INVALID_OPENING_QUOTE'
| 'CSV_INVALID_COLUMN_MAPPING'
| 'CSV_INVALID_ARGUMENT'
| 'CSV_INVALID_COLUMN_DEFINITION'
| 'CSV_MAX_RECORD_SIZE'
| 'CSV_NON_TRIMABLE_CHAR_AFTER_CLOSING_QUOTE'
| 'CSV_QUOTE_NOT_CLOSED'
| 'CSV_RECORD_INCONSISTENT_FIELDS_LENGTH'
| 'CSV_RECORD_INCONSISTENT_COLUMNS'
| 'CSV_OPTION_COLUMNS_MISSING_NAME'
export class CsvError extends Error {
readonly code: CsvErrorCode;
[key: string]: any;
constructor(code: CsvErrorCode, message: string | string[], options?: Options, ...contexts: any[]);
}
declare function parse(input: Buffer | string, options?: Options, callback?: Callback): Parser;
declare function parse(input: Buffer | string, callback?: Callback): Parser;
declare function parse(options?: Options, callback?: Callback): Parser;
declare function parse(callback?: Callback): Parser;
// export default parse;
export { parse }

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import { Options } from './index.js';
declare function parse(options?: Options): TransformStream;
// export default parse;
export { parse };
export {
CastingContext, CastingFunction, CastingDateFunction,
ColumnOption, Options, Info, CsvErrorCode, CsvError
} from './index.js';

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import { Options } from './index.js';
declare function parse(input: Buffer | string, options?: Options): any;
// export default parse;
export { parse };
export {
CastingContext, CastingFunction, CastingDateFunction,
ColumnOption, Options, Info, CsvErrorCode, CsvError
} from './index.js';

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node_modules/csv-parse/lib/api/CsvError.js generated vendored Normal file
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class CsvError extends Error {
constructor(code, message, options, ...contexts) {
if (Array.isArray(message)) message = message.join(" ").trim();
super(message);
if (Error.captureStackTrace !== undefined) {
Error.captureStackTrace(this, CsvError);
}
this.code = code;
for (const context of contexts) {
for (const key in context) {
const value = context[key];
this[key] = Buffer.isBuffer(value)
? value.toString(options.encoding)
: value == null
? value
: JSON.parse(JSON.stringify(value));
}
}
}
}
export { CsvError };

908
node_modules/csv-parse/lib/api/index.js generated vendored Normal file
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import { normalize_columns_array } from "./normalize_columns_array.js";
import { init_state } from "./init_state.js";
import { normalize_options } from "./normalize_options.js";
import { CsvError } from "./CsvError.js";
const isRecordEmpty = function (record) {
return record.every(
(field) =>
field == null || (field.toString && field.toString().trim() === ""),
);
};
const cr = 13; // `\r`, carriage return, 0x0D in hexadécimal, 13 in decimal
const nl = 10; // `\n`, newline, 0x0A in hexadecimal, 10 in decimal
const boms = {
// Note, the following are equals:
// Buffer.from("\ufeff")
// Buffer.from([239, 187, 191])
// Buffer.from('EFBBBF', 'hex')
utf8: Buffer.from([239, 187, 191]),
// Note, the following are equals:
// Buffer.from "\ufeff", 'utf16le
// Buffer.from([255, 254])
utf16le: Buffer.from([255, 254]),
};
const transform = function (original_options = {}) {
const info = {
bytes: 0,
comment_lines: 0,
empty_lines: 0,
invalid_field_length: 0,
lines: 1,
records: 0,
};
const options = normalize_options(original_options);
return {
info: info,
original_options: original_options,
options: options,
state: init_state(options),
__needMoreData: function (i, bufLen, end) {
if (end) return false;
const { encoding, escape, quote } = this.options;
const { quoting, needMoreDataSize, recordDelimiterMaxLength } =
this.state;
const numOfCharLeft = bufLen - i - 1;
const requiredLength = Math.max(
needMoreDataSize,
// Skip if the remaining buffer smaller than record delimiter
// If "record_delimiter" is yet to be discovered:
// 1. It is equals to `[]` and "recordDelimiterMaxLength" equals `0`
// 2. We set the length to windows line ending in the current encoding
// Note, that encoding is known from user or bom discovery at that point
// recordDelimiterMaxLength,
recordDelimiterMaxLength === 0
? Buffer.from("\r\n", encoding).length
: recordDelimiterMaxLength,
// Skip if remaining buffer can be an escaped quote
quoting ? (escape === null ? 0 : escape.length) + quote.length : 0,
// Skip if remaining buffer can be record delimiter following the closing quote
quoting ? quote.length + recordDelimiterMaxLength : 0,
);
return numOfCharLeft < requiredLength;
},
// Central parser implementation
parse: function (nextBuf, end, push, close) {
const {
bom,
comment_no_infix,
encoding,
from_line,
ltrim,
max_record_size,
raw,
relax_quotes,
rtrim,
skip_empty_lines,
to,
to_line,
} = this.options;
let { comment, escape, quote, record_delimiter } = this.options;
const { bomSkipped, previousBuf, rawBuffer, escapeIsQuote } = this.state;
let buf;
if (previousBuf === undefined) {
if (nextBuf === undefined) {
// Handle empty string
close();
return;
} else {
buf = nextBuf;
}
} else if (previousBuf !== undefined && nextBuf === undefined) {
buf = previousBuf;
} else {
buf = Buffer.concat([previousBuf, nextBuf]);
}
// Handle UTF BOM
if (bomSkipped === false) {
if (bom === false) {
this.state.bomSkipped = true;
} else if (buf.length < 3) {
// No enough data
if (end === false) {
// Wait for more data
this.state.previousBuf = buf;
return;
}
} else {
for (const encoding in boms) {
if (boms[encoding].compare(buf, 0, boms[encoding].length) === 0) {
// Skip BOM
const bomLength = boms[encoding].length;
this.state.bufBytesStart += bomLength;
buf = buf.slice(bomLength);
// Renormalize original options with the new encoding
this.options = normalize_options({
...this.original_options,
encoding: encoding,
});
// Options will re-evaluate the Buffer with the new encoding
({ comment, escape, quote } = this.options);
break;
}
}
this.state.bomSkipped = true;
}
}
const bufLen = buf.length;
let pos;
for (pos = 0; pos < bufLen; pos++) {
// Ensure we get enough space to look ahead
// There should be a way to move this out of the loop
if (this.__needMoreData(pos, bufLen, end)) {
break;
}
if (this.state.wasRowDelimiter === true) {
this.info.lines++;
this.state.wasRowDelimiter = false;
}
if (to_line !== -1 && this.info.lines > to_line) {
this.state.stop = true;
close();
return;
}
// Auto discovery of record_delimiter, unix, mac and windows supported
if (this.state.quoting === false && record_delimiter.length === 0) {
const record_delimiterCount = this.__autoDiscoverRecordDelimiter(
buf,
pos,
);
if (record_delimiterCount) {
record_delimiter = this.options.record_delimiter;
}
}
const chr = buf[pos];
if (raw === true) {
rawBuffer.append(chr);
}
if (
(chr === cr || chr === nl) &&
this.state.wasRowDelimiter === false
) {
this.state.wasRowDelimiter = true;
}
// Previous char was a valid escape char
// treat the current char as a regular char
if (this.state.escaping === true) {
this.state.escaping = false;
} else {
// Escape is only active inside quoted fields
// We are quoting, the char is an escape chr and there is a chr to escape
// if(escape !== null && this.state.quoting === true && chr === escape && pos + 1 < bufLen){
if (
escape !== null &&
this.state.quoting === true &&
this.__isEscape(buf, pos, chr) &&
pos + escape.length < bufLen
) {
if (escapeIsQuote) {
if (this.__isQuote(buf, pos + escape.length)) {
this.state.escaping = true;
pos += escape.length - 1;
continue;
}
} else {
this.state.escaping = true;
pos += escape.length - 1;
continue;
}
}
// Not currently escaping and chr is a quote
// TODO: need to compare bytes instead of single char
if (this.state.commenting === false && this.__isQuote(buf, pos)) {
if (this.state.quoting === true) {
const nextChr = buf[pos + quote.length];
const isNextChrTrimable =
rtrim && this.__isCharTrimable(buf, pos + quote.length);
const isNextChrComment =
comment !== null &&
this.__compareBytes(comment, buf, pos + quote.length, nextChr);
const isNextChrDelimiter = this.__isDelimiter(
buf,
pos + quote.length,
nextChr,
);
const isNextChrRecordDelimiter =
record_delimiter.length === 0
? this.__autoDiscoverRecordDelimiter(buf, pos + quote.length)
: this.__isRecordDelimiter(nextChr, buf, pos + quote.length);
// Escape a quote
// Treat next char as a regular character
if (
escape !== null &&
this.__isEscape(buf, pos, chr) &&
this.__isQuote(buf, pos + escape.length)
) {
pos += escape.length - 1;
} else if (
!nextChr ||
isNextChrDelimiter ||
isNextChrRecordDelimiter ||
isNextChrComment ||
isNextChrTrimable
) {
this.state.quoting = false;
this.state.wasQuoting = true;
pos += quote.length - 1;
continue;
} else if (relax_quotes === false) {
const err = this.__error(
new CsvError(
"CSV_INVALID_CLOSING_QUOTE",
[
"Invalid Closing Quote:",
`got "${String.fromCharCode(nextChr)}"`,
`at line ${this.info.lines}`,
"instead of delimiter, record delimiter, trimable character",
"(if activated) or comment",
],
this.options,
this.__infoField(),
),
);
if (err !== undefined) return err;
} else {
this.state.quoting = false;
this.state.wasQuoting = true;
this.state.field.prepend(quote);
pos += quote.length - 1;
}
} else {
if (this.state.field.length !== 0) {
// In relax_quotes mode, treat opening quote preceded by chrs as regular
if (relax_quotes === false) {
const info = this.__infoField();
const bom = Object.keys(boms)
.map((b) =>
boms[b].equals(this.state.field.toString()) ? b : false,
)
.filter(Boolean)[0];
const err = this.__error(
new CsvError(
"INVALID_OPENING_QUOTE",
[
"Invalid Opening Quote:",
`a quote is found on field ${JSON.stringify(info.column)} at line ${info.lines}, value is ${JSON.stringify(this.state.field.toString(encoding))}`,
bom ? `(${bom} bom)` : undefined,
],
this.options,
info,
{
field: this.state.field,
},
),
);
if (err !== undefined) return err;
}
} else {
this.state.quoting = true;
pos += quote.length - 1;
continue;
}
}
}
if (this.state.quoting === false) {
const recordDelimiterLength = this.__isRecordDelimiter(
chr,
buf,
pos,
);
if (recordDelimiterLength !== 0) {
// Do not emit comments which take a full line
const skipCommentLine =
this.state.commenting &&
this.state.wasQuoting === false &&
this.state.record.length === 0 &&
this.state.field.length === 0;
if (skipCommentLine) {
this.info.comment_lines++;
// Skip full comment line
} else {
// Activate records emition if above from_line
if (
this.state.enabled === false &&
this.info.lines +
(this.state.wasRowDelimiter === true ? 1 : 0) >=
from_line
) {
this.state.enabled = true;
this.__resetField();
this.__resetRecord();
pos += recordDelimiterLength - 1;
continue;
}
// Skip if line is empty and skip_empty_lines activated
if (
skip_empty_lines === true &&
this.state.wasQuoting === false &&
this.state.record.length === 0 &&
this.state.field.length === 0
) {
this.info.empty_lines++;
pos += recordDelimiterLength - 1;
continue;
}
this.info.bytes = this.state.bufBytesStart + pos;
const errField = this.__onField();
if (errField !== undefined) return errField;
this.info.bytes =
this.state.bufBytesStart + pos + recordDelimiterLength;
const errRecord = this.__onRecord(push);
if (errRecord !== undefined) return errRecord;
if (to !== -1 && this.info.records >= to) {
this.state.stop = true;
close();
return;
}
}
this.state.commenting = false;
pos += recordDelimiterLength - 1;
continue;
}
if (this.state.commenting) {
continue;
}
if (
comment !== null &&
(comment_no_infix === false ||
(this.state.record.length === 0 &&
this.state.field.length === 0))
) {
const commentCount = this.__compareBytes(comment, buf, pos, chr);
if (commentCount !== 0) {
this.state.commenting = true;
continue;
}
}
const delimiterLength = this.__isDelimiter(buf, pos, chr);
if (delimiterLength !== 0) {
this.info.bytes = this.state.bufBytesStart + pos;
const errField = this.__onField();
if (errField !== undefined) return errField;
pos += delimiterLength - 1;
continue;
}
}
}
if (this.state.commenting === false) {
if (
max_record_size !== 0 &&
this.state.record_length + this.state.field.length > max_record_size
) {
return this.__error(
new CsvError(
"CSV_MAX_RECORD_SIZE",
[
"Max Record Size:",
"record exceed the maximum number of tolerated bytes",
`of ${max_record_size}`,
`at line ${this.info.lines}`,
],
this.options,
this.__infoField(),
),
);
}
}
const lappend =
ltrim === false ||
this.state.quoting === true ||
this.state.field.length !== 0 ||
!this.__isCharTrimable(buf, pos);
// rtrim in non quoting is handle in __onField
const rappend = rtrim === false || this.state.wasQuoting === false;
if (lappend === true && rappend === true) {
this.state.field.append(chr);
} else if (rtrim === true && !this.__isCharTrimable(buf, pos)) {
return this.__error(
new CsvError(
"CSV_NON_TRIMABLE_CHAR_AFTER_CLOSING_QUOTE",
[
"Invalid Closing Quote:",
"found non trimable byte after quote",
`at line ${this.info.lines}`,
],
this.options,
this.__infoField(),
),
);
} else {
if (lappend === false) {
pos += this.__isCharTrimable(buf, pos) - 1;
}
continue;
}
}
if (end === true) {
// Ensure we are not ending in a quoting state
if (this.state.quoting === true) {
const err = this.__error(
new CsvError(
"CSV_QUOTE_NOT_CLOSED",
[
"Quote Not Closed:",
`the parsing is finished with an opening quote at line ${this.info.lines}`,
],
this.options,
this.__infoField(),
),
);
if (err !== undefined) return err;
} else {
// Skip last line if it has no characters
if (
this.state.wasQuoting === true ||
this.state.record.length !== 0 ||
this.state.field.length !== 0
) {
this.info.bytes = this.state.bufBytesStart + pos;
const errField = this.__onField();
if (errField !== undefined) return errField;
const errRecord = this.__onRecord(push);
if (errRecord !== undefined) return errRecord;
} else if (this.state.wasRowDelimiter === true) {
this.info.empty_lines++;
} else if (this.state.commenting === true) {
this.info.comment_lines++;
}
}
} else {
this.state.bufBytesStart += pos;
this.state.previousBuf = buf.slice(pos);
}
if (this.state.wasRowDelimiter === true) {
this.info.lines++;
this.state.wasRowDelimiter = false;
}
},
__onRecord: function (push) {
const {
columns,
group_columns_by_name,
encoding,
info,
from,
relax_column_count,
relax_column_count_less,
relax_column_count_more,
raw,
skip_records_with_empty_values,
} = this.options;
const { enabled, record } = this.state;
if (enabled === false) {
return this.__resetRecord();
}
// Convert the first line into column names
const recordLength = record.length;
if (columns === true) {
if (skip_records_with_empty_values === true && isRecordEmpty(record)) {
this.__resetRecord();
return;
}
return this.__firstLineToColumns(record);
}
if (columns === false && this.info.records === 0) {
this.state.expectedRecordLength = recordLength;
}
if (recordLength !== this.state.expectedRecordLength) {
const err =
columns === false
? new CsvError(
"CSV_RECORD_INCONSISTENT_FIELDS_LENGTH",
[
"Invalid Record Length:",
`expect ${this.state.expectedRecordLength},`,
`got ${recordLength} on line ${this.info.lines}`,
],
this.options,
this.__infoField(),
{
record: record,
},
)
: new CsvError(
"CSV_RECORD_INCONSISTENT_COLUMNS",
[
"Invalid Record Length:",
`columns length is ${columns.length},`, // rename columns
`got ${recordLength} on line ${this.info.lines}`,
],
this.options,
this.__infoField(),
{
record: record,
},
);
if (
relax_column_count === true ||
(relax_column_count_less === true &&
recordLength < this.state.expectedRecordLength) ||
(relax_column_count_more === true &&
recordLength > this.state.expectedRecordLength)
) {
this.info.invalid_field_length++;
this.state.error = err;
// Error is undefined with skip_records_with_error
} else {
const finalErr = this.__error(err);
if (finalErr) return finalErr;
}
}
if (skip_records_with_empty_values === true && isRecordEmpty(record)) {
this.__resetRecord();
return;
}
if (this.state.recordHasError === true) {
this.__resetRecord();
this.state.recordHasError = false;
return;
}
this.info.records++;
if (from === 1 || this.info.records >= from) {
const { objname } = this.options;
// With columns, records are object
if (columns !== false) {
const obj = {};
// Transform record array to an object
for (let i = 0, l = record.length; i < l; i++) {
if (columns[i] === undefined || columns[i].disabled) continue;
// Turn duplicate columns into an array
if (
group_columns_by_name === true &&
obj[columns[i].name] !== undefined
) {
if (Array.isArray(obj[columns[i].name])) {
obj[columns[i].name] = obj[columns[i].name].concat(record[i]);
} else {
obj[columns[i].name] = [obj[columns[i].name], record[i]];
}
} else {
obj[columns[i].name] = record[i];
}
}
// Without objname (default)
if (raw === true || info === true) {
const extRecord = Object.assign(
{ record: obj },
raw === true
? { raw: this.state.rawBuffer.toString(encoding) }
: {},
info === true ? { info: this.__infoRecord() } : {},
);
const err = this.__push(
objname === undefined ? extRecord : [obj[objname], extRecord],
push,
);
if (err) {
return err;
}
} else {
const err = this.__push(
objname === undefined ? obj : [obj[objname], obj],
push,
);
if (err) {
return err;
}
}
// Without columns, records are array
} else {
if (raw === true || info === true) {
const extRecord = Object.assign(
{ record: record },
raw === true
? { raw: this.state.rawBuffer.toString(encoding) }
: {},
info === true ? { info: this.__infoRecord() } : {},
);
const err = this.__push(
objname === undefined ? extRecord : [record[objname], extRecord],
push,
);
if (err) {
return err;
}
} else {
const err = this.__push(
objname === undefined ? record : [record[objname], record],
push,
);
if (err) {
return err;
}
}
}
}
this.__resetRecord();
},
__firstLineToColumns: function (record) {
const { firstLineToHeaders } = this.state;
try {
const headers =
firstLineToHeaders === undefined
? record
: firstLineToHeaders.call(null, record);
if (!Array.isArray(headers)) {
return this.__error(
new CsvError(
"CSV_INVALID_COLUMN_MAPPING",
[
"Invalid Column Mapping:",
"expect an array from column function,",
`got ${JSON.stringify(headers)}`,
],
this.options,
this.__infoField(),
{
headers: headers,
},
),
);
}
const normalizedHeaders = normalize_columns_array(headers);
this.state.expectedRecordLength = normalizedHeaders.length;
this.options.columns = normalizedHeaders;
this.__resetRecord();
return;
} catch (err) {
return err;
}
},
__resetRecord: function () {
if (this.options.raw === true) {
this.state.rawBuffer.reset();
}
this.state.error = undefined;
this.state.record = [];
this.state.record_length = 0;
},
__onField: function () {
const { cast, encoding, rtrim, max_record_size } = this.options;
const { enabled, wasQuoting } = this.state;
// Short circuit for the from_line options
if (enabled === false) {
return this.__resetField();
}
let field = this.state.field.toString(encoding);
if (rtrim === true && wasQuoting === false) {
field = field.trimRight();
}
if (cast === true) {
const [err, f] = this.__cast(field);
if (err !== undefined) return err;
field = f;
}
this.state.record.push(field);
// Increment record length if record size must not exceed a limit
if (max_record_size !== 0 && typeof field === "string") {
this.state.record_length += field.length;
}
this.__resetField();
},
__resetField: function () {
this.state.field.reset();
this.state.wasQuoting = false;
},
__push: function (record, push) {
const { on_record } = this.options;
if (on_record !== undefined) {
const info = this.__infoRecord();
try {
record = on_record.call(null, record, info);
} catch (err) {
return err;
}
if (record === undefined || record === null) {
return;
}
}
push(record);
},
// Return a tuple with the error and the casted value
__cast: function (field) {
const { columns, relax_column_count } = this.options;
const isColumns = Array.isArray(columns);
// Dont loose time calling cast
// because the final record is an object
// and this field can't be associated to a key present in columns
if (
isColumns === true &&
relax_column_count &&
this.options.columns.length <= this.state.record.length
) {
return [undefined, undefined];
}
if (this.state.castField !== null) {
try {
const info = this.__infoField();
return [undefined, this.state.castField.call(null, field, info)];
} catch (err) {
return [err];
}
}
if (this.__isFloat(field)) {
return [undefined, parseFloat(field)];
} else if (this.options.cast_date !== false) {
const info = this.__infoField();
return [undefined, this.options.cast_date.call(null, field, info)];
}
return [undefined, field];
},
// Helper to test if a character is a space or a line delimiter
__isCharTrimable: function (buf, pos) {
const isTrim = (buf, pos) => {
const { timchars } = this.state;
loop1: for (let i = 0; i < timchars.length; i++) {
const timchar = timchars[i];
for (let j = 0; j < timchar.length; j++) {
if (timchar[j] !== buf[pos + j]) continue loop1;
}
return timchar.length;
}
return 0;
};
return isTrim(buf, pos);
},
// Keep it in case we implement the `cast_int` option
// __isInt(value){
// // return Number.isInteger(parseInt(value))
// // return !isNaN( parseInt( obj ) );
// return /^(\-|\+)?[1-9][0-9]*$/.test(value)
// }
__isFloat: function (value) {
return value - parseFloat(value) + 1 >= 0; // Borrowed from jquery
},
__compareBytes: function (sourceBuf, targetBuf, targetPos, firstByte) {
if (sourceBuf[0] !== firstByte) return 0;
const sourceLength = sourceBuf.length;
for (let i = 1; i < sourceLength; i++) {
if (sourceBuf[i] !== targetBuf[targetPos + i]) return 0;
}
return sourceLength;
},
__isDelimiter: function (buf, pos, chr) {
const { delimiter, ignore_last_delimiters } = this.options;
if (
ignore_last_delimiters === true &&
this.state.record.length === this.options.columns.length - 1
) {
return 0;
} else if (
ignore_last_delimiters !== false &&
typeof ignore_last_delimiters === "number" &&
this.state.record.length === ignore_last_delimiters - 1
) {
return 0;
}
loop1: for (let i = 0; i < delimiter.length; i++) {
const del = delimiter[i];
if (del[0] === chr) {
for (let j = 1; j < del.length; j++) {
if (del[j] !== buf[pos + j]) continue loop1;
}
return del.length;
}
}
return 0;
},
__isRecordDelimiter: function (chr, buf, pos) {
const { record_delimiter } = this.options;
const recordDelimiterLength = record_delimiter.length;
loop1: for (let i = 0; i < recordDelimiterLength; i++) {
const rd = record_delimiter[i];
const rdLength = rd.length;
if (rd[0] !== chr) {
continue;
}
for (let j = 1; j < rdLength; j++) {
if (rd[j] !== buf[pos + j]) {
continue loop1;
}
}
return rd.length;
}
return 0;
},
__isEscape: function (buf, pos, chr) {
const { escape } = this.options;
if (escape === null) return false;
const l = escape.length;
if (escape[0] === chr) {
for (let i = 0; i < l; i++) {
if (escape[i] !== buf[pos + i]) {
return false;
}
}
return true;
}
return false;
},
__isQuote: function (buf, pos) {
const { quote } = this.options;
if (quote === null) return false;
const l = quote.length;
for (let i = 0; i < l; i++) {
if (quote[i] !== buf[pos + i]) {
return false;
}
}
return true;
},
__autoDiscoverRecordDelimiter: function (buf, pos) {
const { encoding } = this.options;
// Note, we don't need to cache this information in state,
// It is only called on the first line until we find out a suitable
// record delimiter.
const rds = [
// Important, the windows line ending must be before mac os 9
Buffer.from("\r\n", encoding),
Buffer.from("\n", encoding),
Buffer.from("\r", encoding),
];
loop: for (let i = 0; i < rds.length; i++) {
const l = rds[i].length;
for (let j = 0; j < l; j++) {
if (rds[i][j] !== buf[pos + j]) {
continue loop;
}
}
this.options.record_delimiter.push(rds[i]);
this.state.recordDelimiterMaxLength = rds[i].length;
return rds[i].length;
}
return 0;
},
__error: function (msg) {
const { encoding, raw, skip_records_with_error } = this.options;
const err = typeof msg === "string" ? new Error(msg) : msg;
if (skip_records_with_error) {
this.state.recordHasError = true;
if (this.options.on_skip !== undefined) {
this.options.on_skip(
err,
raw ? this.state.rawBuffer.toString(encoding) : undefined,
);
}
// this.emit('skip', err, raw ? this.state.rawBuffer.toString(encoding) : undefined);
return undefined;
} else {
return err;
}
},
__infoDataSet: function () {
return {
...this.info,
columns: this.options.columns,
};
},
__infoRecord: function () {
const { columns, raw, encoding } = this.options;
return {
...this.__infoDataSet(),
error: this.state.error,
header: columns === true,
index: this.state.record.length,
raw: raw ? this.state.rawBuffer.toString(encoding) : undefined,
};
},
__infoField: function () {
const { columns } = this.options;
const isColumns = Array.isArray(columns);
return {
...this.__infoRecord(),
column:
isColumns === true
? columns.length > this.state.record.length
? columns[this.state.record.length].name
: null
: this.state.record.length,
quoting: this.state.wasQuoting,
};
},
};
};
export { transform, CsvError };

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import ResizeableBuffer from "../utils/ResizeableBuffer.js";
// white space characters
// https://en.wikipedia.org/wiki/Whitespace_character
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes#Types
// \f\n\r\t\v\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff
const np = 12;
const cr = 13; // `\r`, carriage return, 0x0D in hexadécimal, 13 in decimal
const nl = 10; // `\n`, newline, 0x0A in hexadecimal, 10 in decimal
const space = 32;
const tab = 9;
const init_state = function (options) {
return {
bomSkipped: false,
bufBytesStart: 0,
castField: options.cast_function,
commenting: false,
// Current error encountered by a record
error: undefined,
enabled: options.from_line === 1,
escaping: false,
escapeIsQuote:
Buffer.isBuffer(options.escape) &&
Buffer.isBuffer(options.quote) &&
Buffer.compare(options.escape, options.quote) === 0,
// columns can be `false`, `true`, `Array`
expectedRecordLength: Array.isArray(options.columns)
? options.columns.length
: undefined,
field: new ResizeableBuffer(20),
firstLineToHeaders: options.cast_first_line_to_header,
needMoreDataSize: Math.max(
// Skip if the remaining buffer smaller than comment
options.comment !== null ? options.comment.length : 0,
// Skip if the remaining buffer can be delimiter
...options.delimiter.map((delimiter) => delimiter.length),
// Skip if the remaining buffer can be escape sequence
options.quote !== null ? options.quote.length : 0,
),
previousBuf: undefined,
quoting: false,
stop: false,
rawBuffer: new ResizeableBuffer(100),
record: [],
recordHasError: false,
record_length: 0,
recordDelimiterMaxLength:
options.record_delimiter.length === 0
? 0
: Math.max(...options.record_delimiter.map((v) => v.length)),
trimChars: [
Buffer.from(" ", options.encoding)[0],
Buffer.from("\t", options.encoding)[0],
],
wasQuoting: false,
wasRowDelimiter: false,
timchars: [
Buffer.from(Buffer.from([cr], "utf8").toString(), options.encoding),
Buffer.from(Buffer.from([nl], "utf8").toString(), options.encoding),
Buffer.from(Buffer.from([np], "utf8").toString(), options.encoding),
Buffer.from(Buffer.from([space], "utf8").toString(), options.encoding),
Buffer.from(Buffer.from([tab], "utf8").toString(), options.encoding),
],
};
};
export { init_state };

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import { CsvError } from "./CsvError.js";
import { is_object } from "../utils/is_object.js";
const normalize_columns_array = function (columns) {
const normalizedColumns = [];
for (let i = 0, l = columns.length; i < l; i++) {
const column = columns[i];
if (column === undefined || column === null || column === false) {
normalizedColumns[i] = { disabled: true };
} else if (typeof column === "string") {
normalizedColumns[i] = { name: column };
} else if (is_object(column)) {
if (typeof column.name !== "string") {
throw new CsvError("CSV_OPTION_COLUMNS_MISSING_NAME", [
"Option columns missing name:",
`property "name" is required at position ${i}`,
"when column is an object literal",
]);
}
normalizedColumns[i] = column;
} else {
throw new CsvError("CSV_INVALID_COLUMN_DEFINITION", [
"Invalid column definition:",
"expect a string or a literal object,",
`got ${JSON.stringify(column)} at position ${i}`,
]);
}
}
return normalizedColumns;
};
export { normalize_columns_array };

691
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import { normalize_columns_array } from "./normalize_columns_array.js";
import { CsvError } from "./CsvError.js";
import { underscore } from "../utils/underscore.js";
const normalize_options = function (opts) {
const options = {};
// Merge with user options
for (const opt in opts) {
options[underscore(opt)] = opts[opt];
}
// Normalize option `encoding`
// Note: defined first because other options depends on it
// to convert chars/strings into buffers.
if (options.encoding === undefined || options.encoding === true) {
options.encoding = "utf8";
} else if (options.encoding === null || options.encoding === false) {
options.encoding = null;
} else if (
typeof options.encoding !== "string" &&
options.encoding !== null
) {
throw new CsvError(
"CSV_INVALID_OPTION_ENCODING",
[
"Invalid option encoding:",
"encoding must be a string or null to return a buffer,",
`got ${JSON.stringify(options.encoding)}`,
],
options,
);
}
// Normalize option `bom`
if (
options.bom === undefined ||
options.bom === null ||
options.bom === false
) {
options.bom = false;
} else if (options.bom !== true) {
throw new CsvError(
"CSV_INVALID_OPTION_BOM",
[
"Invalid option bom:",
"bom must be true,",
`got ${JSON.stringify(options.bom)}`,
],
options,
);
}
// Normalize option `cast`
options.cast_function = null;
if (
options.cast === undefined ||
options.cast === null ||
options.cast === false ||
options.cast === ""
) {
options.cast = undefined;
} else if (typeof options.cast === "function") {
options.cast_function = options.cast;
options.cast = true;
} else if (options.cast !== true) {
throw new CsvError(
"CSV_INVALID_OPTION_CAST",
[
"Invalid option cast:",
"cast must be true or a function,",
`got ${JSON.stringify(options.cast)}`,
],
options,
);
}
// Normalize option `cast_date`
if (
options.cast_date === undefined ||
options.cast_date === null ||
options.cast_date === false ||
options.cast_date === ""
) {
options.cast_date = false;
} else if (options.cast_date === true) {
options.cast_date = function (value) {
const date = Date.parse(value);
return !isNaN(date) ? new Date(date) : value;
};
} else if (typeof options.cast_date !== "function") {
throw new CsvError(
"CSV_INVALID_OPTION_CAST_DATE",
[
"Invalid option cast_date:",
"cast_date must be true or a function,",
`got ${JSON.stringify(options.cast_date)}`,
],
options,
);
}
// Normalize option `columns`
options.cast_first_line_to_header = null;
if (options.columns === true) {
// Fields in the first line are converted as-is to columns
options.cast_first_line_to_header = undefined;
} else if (typeof options.columns === "function") {
options.cast_first_line_to_header = options.columns;
options.columns = true;
} else if (Array.isArray(options.columns)) {
options.columns = normalize_columns_array(options.columns);
} else if (
options.columns === undefined ||
options.columns === null ||
options.columns === false
) {
options.columns = false;
} else {
throw new CsvError(
"CSV_INVALID_OPTION_COLUMNS",
[
"Invalid option columns:",
"expect an array, a function or true,",
`got ${JSON.stringify(options.columns)}`,
],
options,
);
}
// Normalize option `group_columns_by_name`
if (
options.group_columns_by_name === undefined ||
options.group_columns_by_name === null ||
options.group_columns_by_name === false
) {
options.group_columns_by_name = false;
} else if (options.group_columns_by_name !== true) {
throw new CsvError(
"CSV_INVALID_OPTION_GROUP_COLUMNS_BY_NAME",
[
"Invalid option group_columns_by_name:",
"expect an boolean,",
`got ${JSON.stringify(options.group_columns_by_name)}`,
],
options,
);
} else if (options.columns === false) {
throw new CsvError(
"CSV_INVALID_OPTION_GROUP_COLUMNS_BY_NAME",
[
"Invalid option group_columns_by_name:",
"the `columns` mode must be activated.",
],
options,
);
}
// Normalize option `comment`
if (
options.comment === undefined ||
options.comment === null ||
options.comment === false ||
options.comment === ""
) {
options.comment = null;
} else {
if (typeof options.comment === "string") {
options.comment = Buffer.from(options.comment, options.encoding);
}
if (!Buffer.isBuffer(options.comment)) {
throw new CsvError(
"CSV_INVALID_OPTION_COMMENT",
[
"Invalid option comment:",
"comment must be a buffer or a string,",
`got ${JSON.stringify(options.comment)}`,
],
options,
);
}
}
// Normalize option `comment_no_infix`
if (
options.comment_no_infix === undefined ||
options.comment_no_infix === null ||
options.comment_no_infix === false
) {
options.comment_no_infix = false;
} else if (options.comment_no_infix !== true) {
throw new CsvError(
"CSV_INVALID_OPTION_COMMENT",
[
"Invalid option comment_no_infix:",
"value must be a boolean,",
`got ${JSON.stringify(options.comment_no_infix)}`,
],
options,
);
}
// Normalize option `delimiter`
const delimiter_json = JSON.stringify(options.delimiter);
if (!Array.isArray(options.delimiter))
options.delimiter = [options.delimiter];
if (options.delimiter.length === 0) {
throw new CsvError(
"CSV_INVALID_OPTION_DELIMITER",
[
"Invalid option delimiter:",
"delimiter must be a non empty string or buffer or array of string|buffer,",
`got ${delimiter_json}`,
],
options,
);
}
options.delimiter = options.delimiter.map(function (delimiter) {
if (delimiter === undefined || delimiter === null || delimiter === false) {
return Buffer.from(",", options.encoding);
}
if (typeof delimiter === "string") {
delimiter = Buffer.from(delimiter, options.encoding);
}
if (!Buffer.isBuffer(delimiter) || delimiter.length === 0) {
throw new CsvError(
"CSV_INVALID_OPTION_DELIMITER",
[
"Invalid option delimiter:",
"delimiter must be a non empty string or buffer or array of string|buffer,",
`got ${delimiter_json}`,
],
options,
);
}
return delimiter;
});
// Normalize option `escape`
if (options.escape === undefined || options.escape === true) {
options.escape = Buffer.from('"', options.encoding);
} else if (typeof options.escape === "string") {
options.escape = Buffer.from(options.escape, options.encoding);
} else if (options.escape === null || options.escape === false) {
options.escape = null;
}
if (options.escape !== null) {
if (!Buffer.isBuffer(options.escape)) {
throw new Error(
`Invalid Option: escape must be a buffer, a string or a boolean, got ${JSON.stringify(options.escape)}`,
);
}
}
// Normalize option `from`
if (options.from === undefined || options.from === null) {
options.from = 1;
} else {
if (typeof options.from === "string" && /\d+/.test(options.from)) {
options.from = parseInt(options.from);
}
if (Number.isInteger(options.from)) {
if (options.from < 0) {
throw new Error(
`Invalid Option: from must be a positive integer, got ${JSON.stringify(opts.from)}`,
);
}
} else {
throw new Error(
`Invalid Option: from must be an integer, got ${JSON.stringify(options.from)}`,
);
}
}
// Normalize option `from_line`
if (options.from_line === undefined || options.from_line === null) {
options.from_line = 1;
} else {
if (
typeof options.from_line === "string" &&
/\d+/.test(options.from_line)
) {
options.from_line = parseInt(options.from_line);
}
if (Number.isInteger(options.from_line)) {
if (options.from_line <= 0) {
throw new Error(
`Invalid Option: from_line must be a positive integer greater than 0, got ${JSON.stringify(opts.from_line)}`,
);
}
} else {
throw new Error(
`Invalid Option: from_line must be an integer, got ${JSON.stringify(opts.from_line)}`,
);
}
}
// Normalize options `ignore_last_delimiters`
if (
options.ignore_last_delimiters === undefined ||
options.ignore_last_delimiters === null
) {
options.ignore_last_delimiters = false;
} else if (typeof options.ignore_last_delimiters === "number") {
options.ignore_last_delimiters = Math.floor(options.ignore_last_delimiters);
if (options.ignore_last_delimiters === 0) {
options.ignore_last_delimiters = false;
}
} else if (typeof options.ignore_last_delimiters !== "boolean") {
throw new CsvError(
"CSV_INVALID_OPTION_IGNORE_LAST_DELIMITERS",
[
"Invalid option `ignore_last_delimiters`:",
"the value must be a boolean value or an integer,",
`got ${JSON.stringify(options.ignore_last_delimiters)}`,
],
options,
);
}
if (options.ignore_last_delimiters === true && options.columns === false) {
throw new CsvError(
"CSV_IGNORE_LAST_DELIMITERS_REQUIRES_COLUMNS",
[
"The option `ignore_last_delimiters`",
"requires the activation of the `columns` option",
],
options,
);
}
// Normalize option `info`
if (
options.info === undefined ||
options.info === null ||
options.info === false
) {
options.info = false;
} else if (options.info !== true) {
throw new Error(
`Invalid Option: info must be true, got ${JSON.stringify(options.info)}`,
);
}
// Normalize option `max_record_size`
if (
options.max_record_size === undefined ||
options.max_record_size === null ||
options.max_record_size === false
) {
options.max_record_size = 0;
} else if (
Number.isInteger(options.max_record_size) &&
options.max_record_size >= 0
) {
// Great, nothing to do
} else if (
typeof options.max_record_size === "string" &&
/\d+/.test(options.max_record_size)
) {
options.max_record_size = parseInt(options.max_record_size);
} else {
throw new Error(
`Invalid Option: max_record_size must be a positive integer, got ${JSON.stringify(options.max_record_size)}`,
);
}
// Normalize option `objname`
if (
options.objname === undefined ||
options.objname === null ||
options.objname === false
) {
options.objname = undefined;
} else if (Buffer.isBuffer(options.objname)) {
if (options.objname.length === 0) {
throw new Error(`Invalid Option: objname must be a non empty buffer`);
}
if (options.encoding === null) {
// Don't call `toString`, leave objname as a buffer
} else {
options.objname = options.objname.toString(options.encoding);
}
} else if (typeof options.objname === "string") {
if (options.objname.length === 0) {
throw new Error(`Invalid Option: objname must be a non empty string`);
}
// Great, nothing to do
} else if (typeof options.objname === "number") {
// if(options.objname.length === 0){
// throw new Error(`Invalid Option: objname must be a non empty string`);
// }
// Great, nothing to do
} else {
throw new Error(
`Invalid Option: objname must be a string or a buffer, got ${options.objname}`,
);
}
if (options.objname !== undefined) {
if (typeof options.objname === "number") {
if (options.columns !== false) {
throw Error(
"Invalid Option: objname index cannot be combined with columns or be defined as a field",
);
}
} else {
// A string or a buffer
if (options.columns === false) {
throw Error(
"Invalid Option: objname field must be combined with columns or be defined as an index",
);
}
}
}
// Normalize option `on_record`
if (options.on_record === undefined || options.on_record === null) {
options.on_record = undefined;
} else if (typeof options.on_record !== "function") {
throw new CsvError(
"CSV_INVALID_OPTION_ON_RECORD",
[
"Invalid option `on_record`:",
"expect a function,",
`got ${JSON.stringify(options.on_record)}`,
],
options,
);
}
// Normalize option `on_skip`
// options.on_skip ??= (err, chunk) => {
// this.emit('skip', err, chunk);
// };
if (
options.on_skip !== undefined &&
options.on_skip !== null &&
typeof options.on_skip !== "function"
) {
throw new Error(
`Invalid Option: on_skip must be a function, got ${JSON.stringify(options.on_skip)}`,
);
}
// Normalize option `quote`
if (
options.quote === null ||
options.quote === false ||
options.quote === ""
) {
options.quote = null;
} else {
if (options.quote === undefined || options.quote === true) {
options.quote = Buffer.from('"', options.encoding);
} else if (typeof options.quote === "string") {
options.quote = Buffer.from(options.quote, options.encoding);
}
if (!Buffer.isBuffer(options.quote)) {
throw new Error(
`Invalid Option: quote must be a buffer or a string, got ${JSON.stringify(options.quote)}`,
);
}
}
// Normalize option `raw`
if (
options.raw === undefined ||
options.raw === null ||
options.raw === false
) {
options.raw = false;
} else if (options.raw !== true) {
throw new Error(
`Invalid Option: raw must be true, got ${JSON.stringify(options.raw)}`,
);
}
// Normalize option `record_delimiter`
if (options.record_delimiter === undefined) {
options.record_delimiter = [];
} else if (
typeof options.record_delimiter === "string" ||
Buffer.isBuffer(options.record_delimiter)
) {
if (options.record_delimiter.length === 0) {
throw new CsvError(
"CSV_INVALID_OPTION_RECORD_DELIMITER",
[
"Invalid option `record_delimiter`:",
"value must be a non empty string or buffer,",
`got ${JSON.stringify(options.record_delimiter)}`,
],
options,
);
}
options.record_delimiter = [options.record_delimiter];
} else if (!Array.isArray(options.record_delimiter)) {
throw new CsvError(
"CSV_INVALID_OPTION_RECORD_DELIMITER",
[
"Invalid option `record_delimiter`:",
"value must be a string, a buffer or array of string|buffer,",
`got ${JSON.stringify(options.record_delimiter)}`,
],
options,
);
}
options.record_delimiter = options.record_delimiter.map(function (rd, i) {
if (typeof rd !== "string" && !Buffer.isBuffer(rd)) {
throw new CsvError(
"CSV_INVALID_OPTION_RECORD_DELIMITER",
[
"Invalid option `record_delimiter`:",
"value must be a string, a buffer or array of string|buffer",
`at index ${i},`,
`got ${JSON.stringify(rd)}`,
],
options,
);
} else if (rd.length === 0) {
throw new CsvError(
"CSV_INVALID_OPTION_RECORD_DELIMITER",
[
"Invalid option `record_delimiter`:",
"value must be a non empty string or buffer",
`at index ${i},`,
`got ${JSON.stringify(rd)}`,
],
options,
);
}
if (typeof rd === "string") {
rd = Buffer.from(rd, options.encoding);
}
return rd;
});
// Normalize option `relax_column_count`
if (typeof options.relax_column_count === "boolean") {
// Great, nothing to do
} else if (
options.relax_column_count === undefined ||
options.relax_column_count === null
) {
options.relax_column_count = false;
} else {
throw new Error(
`Invalid Option: relax_column_count must be a boolean, got ${JSON.stringify(options.relax_column_count)}`,
);
}
if (typeof options.relax_column_count_less === "boolean") {
// Great, nothing to do
} else if (
options.relax_column_count_less === undefined ||
options.relax_column_count_less === null
) {
options.relax_column_count_less = false;
} else {
throw new Error(
`Invalid Option: relax_column_count_less must be a boolean, got ${JSON.stringify(options.relax_column_count_less)}`,
);
}
if (typeof options.relax_column_count_more === "boolean") {
// Great, nothing to do
} else if (
options.relax_column_count_more === undefined ||
options.relax_column_count_more === null
) {
options.relax_column_count_more = false;
} else {
throw new Error(
`Invalid Option: relax_column_count_more must be a boolean, got ${JSON.stringify(options.relax_column_count_more)}`,
);
}
// Normalize option `relax_quotes`
if (typeof options.relax_quotes === "boolean") {
// Great, nothing to do
} else if (
options.relax_quotes === undefined ||
options.relax_quotes === null
) {
options.relax_quotes = false;
} else {
throw new Error(
`Invalid Option: relax_quotes must be a boolean, got ${JSON.stringify(options.relax_quotes)}`,
);
}
// Normalize option `skip_empty_lines`
if (typeof options.skip_empty_lines === "boolean") {
// Great, nothing to do
} else if (
options.skip_empty_lines === undefined ||
options.skip_empty_lines === null
) {
options.skip_empty_lines = false;
} else {
throw new Error(
`Invalid Option: skip_empty_lines must be a boolean, got ${JSON.stringify(options.skip_empty_lines)}`,
);
}
// Normalize option `skip_records_with_empty_values`
if (typeof options.skip_records_with_empty_values === "boolean") {
// Great, nothing to do
} else if (
options.skip_records_with_empty_values === undefined ||
options.skip_records_with_empty_values === null
) {
options.skip_records_with_empty_values = false;
} else {
throw new Error(
`Invalid Option: skip_records_with_empty_values must be a boolean, got ${JSON.stringify(options.skip_records_with_empty_values)}`,
);
}
// Normalize option `skip_records_with_error`
if (typeof options.skip_records_with_error === "boolean") {
// Great, nothing to do
} else if (
options.skip_records_with_error === undefined ||
options.skip_records_with_error === null
) {
options.skip_records_with_error = false;
} else {
throw new Error(
`Invalid Option: skip_records_with_error must be a boolean, got ${JSON.stringify(options.skip_records_with_error)}`,
);
}
// Normalize option `rtrim`
if (
options.rtrim === undefined ||
options.rtrim === null ||
options.rtrim === false
) {
options.rtrim = false;
} else if (options.rtrim !== true) {
throw new Error(
`Invalid Option: rtrim must be a boolean, got ${JSON.stringify(options.rtrim)}`,
);
}
// Normalize option `ltrim`
if (
options.ltrim === undefined ||
options.ltrim === null ||
options.ltrim === false
) {
options.ltrim = false;
} else if (options.ltrim !== true) {
throw new Error(
`Invalid Option: ltrim must be a boolean, got ${JSON.stringify(options.ltrim)}`,
);
}
// Normalize option `trim`
if (
options.trim === undefined ||
options.trim === null ||
options.trim === false
) {
options.trim = false;
} else if (options.trim !== true) {
throw new Error(
`Invalid Option: trim must be a boolean, got ${JSON.stringify(options.trim)}`,
);
}
// Normalize options `trim`, `ltrim` and `rtrim`
if (options.trim === true && opts.ltrim !== false) {
options.ltrim = true;
} else if (options.ltrim !== true) {
options.ltrim = false;
}
if (options.trim === true && opts.rtrim !== false) {
options.rtrim = true;
} else if (options.rtrim !== true) {
options.rtrim = false;
}
// Normalize option `to`
if (options.to === undefined || options.to === null) {
options.to = -1;
} else {
if (typeof options.to === "string" && /\d+/.test(options.to)) {
options.to = parseInt(options.to);
}
if (Number.isInteger(options.to)) {
if (options.to <= 0) {
throw new Error(
`Invalid Option: to must be a positive integer greater than 0, got ${JSON.stringify(opts.to)}`,
);
}
} else {
throw new Error(
`Invalid Option: to must be an integer, got ${JSON.stringify(opts.to)}`,
);
}
}
// Normalize option `to_line`
if (options.to_line === undefined || options.to_line === null) {
options.to_line = -1;
} else {
if (typeof options.to_line === "string" && /\d+/.test(options.to_line)) {
options.to_line = parseInt(options.to_line);
}
if (Number.isInteger(options.to_line)) {
if (options.to_line <= 0) {
throw new Error(
`Invalid Option: to_line must be a positive integer greater than 0, got ${JSON.stringify(opts.to_line)}`,
);
}
} else {
throw new Error(
`Invalid Option: to_line must be an integer, got ${JSON.stringify(opts.to_line)}`,
);
}
}
return options;
};
export { normalize_options };

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// Original definitions in https://github.com/DefinitelyTyped/DefinitelyTyped by: David Muller <https://github.com/davidm77>
/// <reference types="node" />
import * as stream from "stream";
export type Callback = (err: CsvError | undefined, records: any | undefined, info: Info) => void;
export interface Parser extends stream.Transform {}
export class Parser {
constructor(options: Options);
__push(line: any): any;
__write(chars: any, end: any, callback: any): any;
readonly options: Options
readonly info: Info;
}
export interface CastingContext {
readonly column: number | string;
readonly empty_lines: number;
readonly error: CsvError;
readonly header: boolean;
readonly index: number;
readonly quoting: boolean;
readonly lines: number;
readonly records: number;
readonly invalid_field_length: number;
}
export type CastingFunction = (value: string, context: CastingContext) => any;
export type CastingDateFunction = (value: string, context: CastingContext) => Date;
export type ColumnOption = string | undefined | null | false | { name: string };
/*
Note, could not `extends stream.TransformOptions` because encoding can be
BufferEncoding and undefined as well as null which is not defined in the
extended type.
*/
export interface Options {
/**
* If true, the parser will attempt to convert read data types to native types.
* @deprecated Use {@link cast}
*/
auto_parse?: boolean | CastingFunction;
autoParse?: boolean | CastingFunction;
/**
* If true, the parser will attempt to convert read data types to dates. It requires the "auto_parse" option.
* @deprecated Use {@link cast_date}
*/
auto_parse_date?: boolean | CastingDateFunction;
autoParseDate?: boolean | CastingDateFunction;
/**
* If true, detect and exclude the byte order mark (BOM) from the CSV input if present.
*/
bom?: boolean;
/**
* If true, the parser will attempt to convert input string to native types.
* If a function, receive the value as first argument, a context as second argument and return a new value. More information about the context properties is available below.
*/
cast?: boolean | CastingFunction;
/**
* If true, the parser will attempt to convert input string to dates.
* If a function, receive the value as argument and return a new value. It requires the "auto_parse" option. Be careful, it relies on Date.parse.
*/
cast_date?: boolean | CastingDateFunction;
castDate?: boolean | CastingDateFunction;
/**
* List of fields as an array,
* a user defined callback accepting the first line and returning the column names or true if autodiscovered in the first CSV line,
* default to null,
* affect the result data set in the sense that records will be objects instead of arrays.
*/
columns?: ColumnOption[] | boolean | ((record: any) => ColumnOption[]);
/**
* Convert values into an array of values when columns are activated and
* when multiple columns of the same name are found.
*/
group_columns_by_name?: boolean;
groupColumnsByName?: boolean;
/**
* Treat all the characters after this one as a comment, default to '' (disabled).
*/
comment?: string;
/**
* Restrict the definition of comments to a full line. Comment characters
* defined in the middle of the line are not interpreted as such. The
* option require the activation of comments.
*/
comment_no_infix?: boolean;
/**
* Set the field delimiter. One character only, defaults to comma.
*/
delimiter?: string | string[] | Buffer;
/**
* Set the source and destination encoding, a value of `null` returns buffer instead of strings.
*/
encoding?: BufferEncoding | undefined;
/**
* Set the escape character, one character only, defaults to double quotes.
*/
escape?: string | null | false | Buffer;
/**
* Start handling records from the requested number of records.
*/
from?: number;
/**
* Start handling records from the requested line number.
*/
from_line?: number;
fromLine?: number;
/**
* Don't interpret delimiters as such in the last field according to the number of fields calculated from the number of columns, the option require the presence of the `column` option when `true`.
*/
ignore_last_delimiters?: boolean | number;
/**
* Generate two properties `info` and `record` where `info` is a snapshot of the info object at the time the record was created and `record` is the parsed array or object.
*/
info?: boolean;
/**
* If true, ignore whitespace immediately following the delimiter (i.e. left-trim all fields), defaults to false.
* Does not remove whitespace in a quoted field.
*/
ltrim?: boolean;
/**
* Maximum numer of characters to be contained in the field and line buffers before an exception is raised,
* used to guard against a wrong delimiter or record_delimiter,
* default to 128000 characters.
*/
max_record_size?: number;
maxRecordSize?: number;
/**
* Name of header-record title to name objects by.
*/
objname?: string;
/**
* Alter and filter records by executing a user defined function.
*/
on_record?: (record: any, context: CastingContext) => any;
onRecord?: (record: any, context: CastingContext) => any;
/**
* Optional character surrounding a field, one character only, defaults to double quotes.
*/
quote?: string | boolean | Buffer | null;
/**
* Generate two properties raw and row where raw is the original CSV row content and row is the parsed array or object.
*/
raw?: boolean;
/**
* Discard inconsistent columns count, default to false.
*/
relax_column_count?: boolean;
relaxColumnCount?: boolean;
/**
* Discard inconsistent columns count when the record contains less fields than expected, default to false.
*/
relax_column_count_less?: boolean;
relaxColumnCountLess?: boolean;
/**
* Discard inconsistent columns count when the record contains more fields than expected, default to false.
*/
relax_column_count_more?: boolean;
relaxColumnCountMore?: boolean;
/**
* Preserve quotes inside unquoted field.
*/
relax_quotes?: boolean;
relaxQuotes?: boolean;
/**
* One or multiple characters used to delimit record rows; defaults to auto discovery if not provided.
* Supported auto discovery method are Linux ("\n"), Apple ("\r") and Windows ("\r\n") row delimiters.
*/
record_delimiter?: string | string[] | Buffer | Buffer[];
recordDelimiter?: string | string[] | Buffer | Buffer[];
/**
* If true, ignore whitespace immediately preceding the delimiter (i.e. right-trim all fields), defaults to false.
* Does not remove whitespace in a quoted field.
*/
rtrim?: boolean;
/**
* Dont generate empty values for empty lines.
* Defaults to false
*/
skip_empty_lines?: boolean;
skipEmptyLines?: boolean;
/**
* Skip a line with error found inside and directly go process the next line.
*/
skip_records_with_error?: boolean;
skipRecordsWithError?: boolean;
/**
* Don't generate records for lines containing empty column values (column matching /\s*\/), defaults to false.
*/
skip_records_with_empty_values?: boolean;
skipRecordsWithEmptyValues?: boolean;
/**
* Stop handling records after the requested number of records.
*/
to?: number;
/**
* Stop handling records after the requested line number.
*/
to_line?: number;
toLine?: number;
/**
* If true, ignore whitespace immediately around the delimiter, defaults to false.
* Does not remove whitespace in a quoted field.
*/
trim?: boolean;
}
export interface Info {
/**
* Count the number of lines being fully commented.
*/
readonly comment_lines: number;
/**
* Count the number of processed empty lines.
*/
readonly empty_lines: number;
/**
* The number of lines encountered in the source dataset, start at 1 for the first line.
*/
readonly lines: number;
/**
* Count the number of processed records.
*/
readonly records: number;
/**
* Count of the number of processed bytes.
*/
readonly bytes: number;
/**
* Number of non uniform records when `relax_column_count` is true.
*/
readonly invalid_field_length: number;
/**
* Normalized verion of `options.columns` when `options.columns` is true, boolean otherwise.
*/
readonly columns: boolean | { name: string }[] | { disabled: true }[];
}
export type CsvErrorCode =
'CSV_INVALID_OPTION_BOM'
| 'CSV_INVALID_OPTION_CAST'
| 'CSV_INVALID_OPTION_CAST_DATE'
| 'CSV_INVALID_OPTION_COLUMNS'
| 'CSV_INVALID_OPTION_GROUP_COLUMNS_BY_NAME'
| 'CSV_INVALID_OPTION_COMMENT'
| 'CSV_INVALID_OPTION_DELIMITER'
| 'CSV_INVALID_OPTION_ON_RECORD'
| 'CSV_INVALID_CLOSING_QUOTE'
| 'INVALID_OPENING_QUOTE'
| 'CSV_INVALID_COLUMN_MAPPING'
| 'CSV_INVALID_ARGUMENT'
| 'CSV_INVALID_COLUMN_DEFINITION'
| 'CSV_MAX_RECORD_SIZE'
| 'CSV_NON_TRIMABLE_CHAR_AFTER_CLOSING_QUOTE'
| 'CSV_QUOTE_NOT_CLOSED'
| 'CSV_RECORD_INCONSISTENT_FIELDS_LENGTH'
| 'CSV_RECORD_INCONSISTENT_COLUMNS'
| 'CSV_OPTION_COLUMNS_MISSING_NAME'
export class CsvError extends Error {
readonly code: CsvErrorCode;
[key: string]: any;
constructor(code: CsvErrorCode, message: string | string[], options?: Options, ...contexts: any[]);
}
declare function parse(input: Buffer | string, options?: Options, callback?: Callback): Parser;
declare function parse(input: Buffer | string, callback?: Callback): Parser;
declare function parse(options?: Options, callback?: Callback): Parser;
declare function parse(callback?: Callback): Parser;
// export default parse;
export { parse }

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/*
CSV Parse
Please look at the [project documentation](https://csv.js.org/parse/) for
additional information.
*/
import { Transform } from "stream";
import { is_object } from "./utils/is_object.js";
import { transform } from "./api/index.js";
import { CsvError } from "./api/CsvError.js";
class Parser extends Transform {
constructor(opts = {}) {
super({ ...{ readableObjectMode: true }, ...opts, encoding: null });
this.api = transform({
on_skip: (err, chunk) => {
this.emit("skip", err, chunk);
},
...opts,
});
// Backward compatibility
this.state = this.api.state;
this.options = this.api.options;
this.info = this.api.info;
}
// Implementation of `Transform._transform`
_transform(buf, _, callback) {
if (this.state.stop === true) {
return;
}
const err = this.api.parse(
buf,
false,
(record) => {
this.push(record);
},
() => {
this.push(null);
this.end();
// Fix #333 and break #410
// ko: api.stream.iterator.coffee
// ko with v21.4.0, ok with node v20.5.1: api.stream.finished # aborted (with generate())
// ko: api.stream.finished # aborted (with Readable)
// this.destroy()
// Fix #410 and partially break #333
// ok: api.stream.iterator.coffee
// ok: api.stream.finished # aborted (with generate())
// broken: api.stream.finished # aborted (with Readable)
this.on("end", this.destroy);
},
);
if (err !== undefined) {
this.state.stop = true;
}
callback(err);
}
// Implementation of `Transform._flush`
_flush(callback) {
if (this.state.stop === true) {
return;
}
const err = this.api.parse(
undefined,
true,
(record) => {
this.push(record);
},
() => {
this.push(null);
this.on("end", this.destroy);
},
);
callback(err);
}
}
const parse = function () {
let data, options, callback;
for (const i in arguments) {
const argument = arguments[i];
const type = typeof argument;
if (
data === undefined &&
(typeof argument === "string" || Buffer.isBuffer(argument))
) {
data = argument;
} else if (options === undefined && is_object(argument)) {
options = argument;
} else if (callback === undefined && type === "function") {
callback = argument;
} else {
throw new CsvError(
"CSV_INVALID_ARGUMENT",
["Invalid argument:", `got ${JSON.stringify(argument)} at index ${i}`],
options || {},
);
}
}
const parser = new Parser(options);
if (callback) {
const records =
options === undefined || options.objname === undefined ? [] : {};
parser.on("readable", function () {
let record;
while ((record = this.read()) !== null) {
if (options === undefined || options.objname === undefined) {
records.push(record);
} else {
records[record[0]] = record[1];
}
}
});
parser.on("error", function (err) {
callback(err, undefined, parser.api.__infoDataSet());
});
parser.on("end", function () {
callback(undefined, records, parser.api.__infoDataSet());
});
}
if (data !== undefined) {
const writer = function () {
parser.write(data);
parser.end();
};
// Support Deno, Rollup doesnt provide a shim for setImmediate
if (typeof setImmediate === "function") {
setImmediate(writer);
} else {
setTimeout(writer, 0);
}
}
return parser;
};
// export default parse
export { parse, Parser, CsvError };

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node_modules/csv-parse/lib/stream.d.ts generated vendored Normal file
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import { Options } from './index.js';
declare function parse(options?: Options): TransformStream;
// export default parse;
export { parse };
export {
CastingContext, CastingFunction, CastingDateFunction,
ColumnOption, Options, Info, CsvErrorCode, CsvError
} from './index.js';

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import { TransformStream, CountQueuingStrategy } from "node:stream/web";
import { transform } from "./api/index.js";
const parse = (opts) => {
const api = transform(opts);
let controller;
const enqueue = (record) => {
controller.enqueue(record);
};
const terminate = () => {
controller.terminate();
};
return new TransformStream(
{
start(ctr) {
controller = ctr;
},
transform(chunk) {
const error = api.parse(chunk, false, enqueue, terminate);
if (error) {
controller.error(error);
}
},
flush() {
const error = api.parse(undefined, true, enqueue, terminate);
if (error) {
controller.error(error);
}
},
},
new CountQueuingStrategy({ highWaterMark: 1024 }),
new CountQueuingStrategy({ highWaterMark: 1024 }),
);
};
export { parse };

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import { Options } from './index.js';
declare function parse(input: Buffer | string, options?: Options): any;
// export default parse;
export { parse };
export {
CastingContext, CastingFunction, CastingDateFunction,
ColumnOption, Options, Info, CsvErrorCode, CsvError
} from './index.js';

25
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import { CsvError, transform } from "./api/index.js";
const parse = function (data, opts = {}) {
if (typeof data === "string") {
data = Buffer.from(data);
}
const records = opts && opts.objname ? {} : [];
const parser = transform(opts);
const push = (record) => {
if (parser.options.objname === undefined) records.push(record);
else {
records[record[0]] = record[1];
}
};
const close = () => {};
const err1 = parser.parse(data, false, push, close);
if (err1 !== undefined) throw err1;
const err2 = parser.parse(undefined, true, push, close);
if (err2 !== undefined) throw err2;
return records;
};
// export default parse
export { parse };
export { CsvError };

63
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class ResizeableBuffer {
constructor(size = 100) {
this.size = size;
this.length = 0;
this.buf = Buffer.allocUnsafe(size);
}
prepend(val) {
if (Buffer.isBuffer(val)) {
const length = this.length + val.length;
if (length >= this.size) {
this.resize();
if (length >= this.size) {
throw Error("INVALID_BUFFER_STATE");
}
}
const buf = this.buf;
this.buf = Buffer.allocUnsafe(this.size);
val.copy(this.buf, 0);
buf.copy(this.buf, val.length);
this.length += val.length;
} else {
const length = this.length++;
if (length === this.size) {
this.resize();
}
const buf = this.clone();
this.buf[0] = val;
buf.copy(this.buf, 1, 0, length);
}
}
append(val) {
const length = this.length++;
if (length === this.size) {
this.resize();
}
this.buf[length] = val;
}
clone() {
return Buffer.from(this.buf.slice(0, this.length));
}
resize() {
const length = this.length;
this.size = this.size * 2;
const buf = Buffer.allocUnsafe(this.size);
this.buf.copy(buf, 0, 0, length);
this.buf = buf;
}
toString(encoding) {
if (encoding) {
return this.buf.slice(0, this.length).toString(encoding);
} else {
return Uint8Array.prototype.slice.call(this.buf.slice(0, this.length));
}
}
toJSON() {
return this.toString("utf8");
}
reset() {
this.length = 0;
}
}
export default ResizeableBuffer;

5
node_modules/csv-parse/lib/utils/is_object.js generated vendored Normal file
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const is_object = function (obj) {
return typeof obj === "object" && obj !== null && !Array.isArray(obj);
};
export { is_object };

7
node_modules/csv-parse/lib/utils/underscore.js generated vendored Normal file
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const underscore = function (str) {
return str.replace(/([A-Z])/g, function (_, match) {
return "_" + match.toLowerCase();
});
};
export { underscore };

156
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{
"version": "5.6.0",
"name": "csv-parse",
"description": "CSV parsing implementing the Node.js `stream.Transform` API",
"keywords": [
"csv",
"parse",
"parser",
"convert",
"tsv",
"stream",
"backend",
"frontend"
],
"author": "David Worms <david@adaltas.com> (https://www.adaltas.com)",
"contributors": [
"David Worms <david@adaltas.com> (https://www.adaltas.com)",
"Will White (https://github.com/willwhite)",
"Justin Latimer (https://github.com/justinlatimer)",
"jonseymour (https://github.com/jonseymour)",
"pascalopitz (https://github.com/pascalopitz)",
"Josh Pschorr (https://github.com/jpschorr)",
"Elad Ben-Israel (https://github.com/eladb)",
"Philippe Plantier (https://github.com/phipla)",
"Tim Oxley (https://github.com/timoxley)",
"Damon Oehlman (https://github.com/DamonOehlman)",
"Alexandru Topliceanu (https://github.com/topliceanu)",
"Visup (https://github.com/visup)",
"Edmund von der Burg (https://github.com/evdb)",
"Douglas Christopher Wilson (https://github.com/dougwilson)",
"Joe Eaves (https://github.com/Joeasaurus)",
"Mark Stosberg (https://github.com/markstos)"
],
"exports": {
".": {
"import": {
"types": "./lib/index.d.ts",
"default": "./lib/index.js"
},
"require": {
"types": "./dist/cjs/index.d.cts",
"default": "./dist/cjs/index.cjs"
}
},
"./sync": {
"import": {
"types": "./lib/sync.d.ts",
"default": "./lib/sync.js"
},
"require": {
"types": "./dist/cjs/sync.d.cts",
"default": "./dist/cjs/sync.cjs"
}
},
"./stream": {
"import": {
"types": "./lib/stream.d.ts",
"default": "./lib/stream.js"
},
"require": {
"types": "./dist/cjs/stream.d.cts",
"default": "./dist/cjs/stream.cjs"
}
},
"./browser/esm": {
"types": "./dist/esm/index.d.ts",
"default": "./dist/esm/index.js"
},
"./browser/esm/sync": {
"types": "./dist/esm/sync.d.ts",
"default": "./dist/esm/sync.js"
}
},
"devDependencies": {
"@eslint/js": "^9.15.0",
"@rollup/plugin-node-resolve": "^15.3.0",
"@types/mocha": "^10.0.9",
"@types/node": "^22.9.1",
"coffeescript": "^2.7.0",
"csv-generate": "^4.4.2",
"csv-spectrum": "^2.0.0",
"each": "^2.7.2",
"eslint": "^9.15.0",
"eslint-config-prettier": "^9.1.0",
"eslint-plugin-mocha": "^10.5.0",
"eslint-plugin-prettier": "^5.2.1",
"mocha": "^10.8.2",
"pad": "^3.3.0",
"prettier": "^3.3.3",
"rollup": "^4.27.3",
"rollup-plugin-node-builtins": "^2.1.2",
"rollup-plugin-node-globals": "^1.4.0",
"should": "^13.2.3",
"stream-transform": "^3.3.3",
"ts-node": "^10.9.2",
"typescript": "^5.6.3"
},
"files": [
"dist",
"lib"
],
"homepage": "https://csv.js.org/parse",
"license": "MIT",
"main": "./dist/cjs/index.cjs",
"mocha": {
"inline-diffs": true,
"loader": "./test/loaders/all.js",
"recursive": true,
"reporter": "spec",
"require": [
"should"
],
"throw-deprecation": false,
"timeout": 40000
},
"lint-staged": {
"*.js": "npm run lint:fix",
"*.md": "prettier -w"
},
"repository": {
"type": "git",
"url": "https://github.com/adaltas/node-csv.git",
"directory": "packages/csv-parse"
},
"scripts": {
"build": "npm run build:rollup && npm run build:ts",
"build:rollup": "npx rollup -c",
"build:ts": "cp lib/index.d.ts dist/cjs/index.d.cts && cp lib/sync.d.ts dist/cjs/sync.d.cts && cp lib/*.ts dist/esm",
"postbuild:ts": "find dist/cjs -name '*.d.cts' -exec sh -c \"sed -i \"s/\\.js'/\\.cjs'/g\" {} || sed -i '' \"s/\\.js'/\\.cjs'/g\" {}\" \\;",
"lint:check": "eslint",
"lint:fix": "eslint --fix",
"lint:ts": "tsc --noEmit true",
"preversion": "npm run build && git add dist",
"test": "mocha 'test/**/*.{coffee,ts}'",
"test:legacy": "mocha --ignore test/api.web_stream.coffee --ignore test/api.web_stream.ts --ignore test/api.stream.finished.coffee --ignore test/api.stream.iterator.coffee --loader=./test/loaders/legacy/all.js 'test/**/*.{coffee,ts}'"
},
"type": "module",
"types": "dist/esm/index.d.ts",
"typesVersions": {
"*": {
".": [
"dist/esm/index.d.ts"
],
"sync": [
"dist/esm/sync.d.ts"
],
"browser/esm": [
"dist/esm/index.d.ts"
],
"browser/esm/sync": [
"dist/esm/sync.d.ts"
]
}
},
"gitHead": "cc1235a58de98dd9eab0665c7b1d03213e9633c7"
}

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{
"name": "awesome-deepseek-integration",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"dependencies": {
"csv-parse": "^5.6.0"
}
},
"node_modules/csv-parse": {
"version": "5.6.0",
"resolved": "https://registry.npmjs.org/csv-parse/-/csv-parse-5.6.0.tgz",
"integrity": "sha512-l3nz3euub2QMg5ouu5U09Ew9Wf6/wQ8I++ch1loQ0ljmzhmfZYrH9fflS22i/PQEvsPvxCwxgz5q7UB8K1JO4Q==",
"license": "MIT"
}
}
}

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package.json Normal file
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{
"dependencies": {
"csv-parse": "^5.6.0"
}
}