This commit is contained in:
2024-03-22 03:47:51 +05:30
parent 8bcf3d211e
commit 89819f6fe2
28440 changed files with 3211033 additions and 2 deletions

23
node_modules/form-data-encoder/@type/FileLike.d.ts generated vendored Normal file
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export interface FileLike {
/**
* Name of the file referenced by the File object.
*/
readonly name: string;
/**
* Returns the media type ([`MIME`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types)) of the file represented by a `File` object.
*/
readonly type: string;
/**
* Size of the file parts in bytes
*/
readonly size: number;
/**
* The last modified date of the file as the number of milliseconds since the Unix epoch (January 1, 1970 at midnight). Files without a known last modified date return the current date.
*/
readonly lastModified: number;
/**
* Returns a [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) which upon reading returns the data contained within the [`File`](https://developer.mozilla.org/en-US/docs/Web/API/File).
*/
stream(): AsyncIterable<Uint8Array>;
readonly [Symbol.toStringTag]: string;
}

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import type { FormDataEncoderHeaders } from "./util/Headers.js";
import type { FormDataLike } from "./FormDataLike.js";
import type { FileLike } from "./FileLike.js";
export interface FormDataEncoderOptions {
/**
* When enabled, the encoder will emit additional per part headers, such as `Content-Length`.
*
* Please note that the web clients do not include these, so when enabled this option might cause an error if `multipart/form-data` does not consider additional headers.
*
* Defaults to `false`.
*/
enableAdditionalHeaders?: boolean;
}
/**
* Implements [`multipart/form-data` encoding algorithm](https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart/form-data-encoding-algorithm),
* allowing to add support for spec-comliant [`FormData`](https://developer.mozilla.org/en-US/docs/Web/API/FormData) to an HTTP client.
*/
export declare class FormDataEncoder {
#private;
/**
* Returns boundary string
*/
readonly boundary: string;
/**
* Returns Content-Type header
*/
readonly contentType: string;
/**
* Returns Content-Length header
*/
readonly contentLength: string | undefined;
/**
* Returns headers object with Content-Type and Content-Length header
*/
readonly headers: Readonly<FormDataEncoderHeaders>;
/**
* Creates a multipart/form-data encoder.
*
* @param form FormData object to encode. This object must be a spec-compatible FormData implementation.
*
* @example
*
* ```js
* import {Readable} from "stream"
*
* import {FormData, File, fileFromPath} from "formdata-node"
* import {FormDataEncoder} from "form-data-encoder"
*
* import fetch from "node-fetch"
*
* const form = new FormData()
*
* form.set("field", "Just a random string")
* form.set("file", new File(["Using files is class amazing"], "file.txt"))
* form.set("fileFromPath", await fileFromPath("path/to/a/file.txt"))
*
* const encoder = new FormDataEncoder(form)
*
* const options = {
* method: "post",
* headers: encoder.headers,
* body: Readable.from(encoder)
* }
*
* const response = await fetch("https://httpbin.org/post", options)
*
* console.log(await response.json())
* ```
*/
constructor(form: FormDataLike);
/**
* Creates multipart/form-data encoder with custom boundary string.
*
* @param form FormData object to encode. This object must be a spec-compatible FormData implementation.
* @param boundary An optional boundary string that will be used by the encoder. If there's no boundary string is present, Encoder will generate it automatically.
*/
constructor(form: FormDataLike, boundary: string);
/**
* Creates multipart/form-data encoder with additional options.
*
* @param form FormData object to encode. This object must be a spec-compatible FormData implementation.
* @param options Additional options
*/
constructor(form: FormDataLike, options: FormDataEncoderOptions);
constructor(form: FormDataLike, boundary: string, options?: FormDataEncoderOptions);
/**
* Returns form-data content length
*
* @deprecated Use FormDataEncoder.contentLength or FormDataEncoder.headers["Content-Length"] instead
*/
getContentLength(): number | undefined;
/**
* Creates an iterator allowing to go through form-data parts (with metadata).
* This method **will not** read the files.
*
* Using this method, you can convert form-data content into Blob:
*
* @example
*
* import {Readable} from "stream"
*
* import {FormDataEncoder} from "form-data-encoder"
*
* import {FormData} from "formdata-polyfill/esm-min.js"
* import {fileFrom} from "fetch-blob/form.js"
* import {File} from "fetch-blob/file.js"
* import {Blob} from "fetch-blob"
*
* import fetch from "node-fetch"
*
* const form = new FormData()
*
* form.set("field", "Just a random string")
* form.set("file", new File(["Using files is class amazing"]))
* form.set("fileFromPath", await fileFrom("path/to/a/file.txt"))
*
* const encoder = new FormDataEncoder(form)
*
* const options = {
* method: "post",
* body: new Blob(encoder, {type: encoder.contentType})
* }
*
* const response = await fetch("https://httpbin.org/post", options)
*
* console.log(await response.json())
*/
values(): Generator<Uint8Array | FileLike, void, undefined>;
/**
* Creates an async iterator allowing to perform the encoding by portions.
* This method **will** also read files.
*
* @example
*
* import {Readable} from "stream"
*
* import {FormData, File, fileFromPath} from "formdata-node"
* import {FormDataEncoder} from "form-data-encoder"
*
* import fetch from "node-fetch"
*
* const form = new FormData()
*
* form.set("field", "Just a random string")
* form.set("file", new File(["Using files is class amazing"], "file.txt"))
* form.set("fileFromPath", await fileFromPath("path/to/a/file.txt"))
*
* const encoder = new FormDataEncoder(form)
*
* const options = {
* method: "post",
* headers: encoder.headers,
* body: Readable.from(encoder.encode()) // or Readable.from(encoder)
* }
*
* const response = await fetch("https://httpbin.org/post", options)
*
* console.log(await response.json())
*/
encode(): AsyncGenerator<Uint8Array, void, undefined>;
/**
* Creates an iterator allowing to read through the encoder data using for...of loops
*/
[Symbol.iterator](): Generator<Uint8Array | FileLike, void, undefined>;
/**
* Creates an **async** iterator allowing to read through the encoder data using for-await...of loops
*/
[Symbol.asyncIterator](): AsyncGenerator<Uint8Array, void, undefined>;
}

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node_modules/form-data-encoder/@type/FormDataLike.d.ts generated vendored Normal file
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import { FileLike } from "./FileLike.js";
/**
* A `string` or `File` that represents a single value from a set of `FormData` key-value pairs.
*/
export type FormDataEntryValue = string | FileLike;
/**
* This interface reflects minimal shape of the FormData
*/
export interface FormDataLike {
/**
* Appends a new value onto an existing key inside a FormData object,
* or adds the key if it does not already exist.
*
* The difference between `set()` and `append()` is that if the specified key already exists, `set()` will overwrite all existing values with the new one, whereas `append()` will append the new value onto the end of the existing set of values.
*
* @param name The name of the field whose data is contained in `value`.
* @param value The field's value. This can be [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob)
or [`File`](https://developer.mozilla.org/en-US/docs/Web/API/File). If none of these are specified the value is converted to a string.
* @param fileName The filename reported to the server, when a Blob or File is passed as the second parameter. The default filename for Blob objects is "blob". The default filename for File objects is the file's filename.
*/
append(name: string, value: unknown, fileName?: string): void;
/**
* Returns all the values associated with a given key from within a `FormData` object.
*
* @param {string} name A name of the value you want to retrieve.
*
* @returns An array of `FormDataEntryValue` whose key matches the value passed in the `name` parameter. If the key doesn't exist, the method returns an empty list.
*/
getAll(name: string): FormDataEntryValue[];
/**
* Returns an [`iterator`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) allowing to go through the `FormData` key/value pairs.
* The key of each pair is a string; the value is a [`FormDataValue`](https://developer.mozilla.org/en-US/docs/Web/API/FormDataEntryValue).
*/
entries(): Generator<[string, FormDataEntryValue]>;
/**
* An alias for FormDataLike#entries()
*/
[Symbol.iterator](): Generator<[string, FormDataEntryValue]>;
readonly [Symbol.toStringTag]: string;
}

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node_modules/form-data-encoder/@type/index.d.ts generated vendored Normal file
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export * from "./FormDataEncoder.js";
export * from "./FileLike.js";
export * from "./FormDataLike.js";
export * from "./util/isFile.js";
export * from "./util/isFormData.js";

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export interface RawHeaders {
"Content-Type": string;
"Content-Length"?: string;
}
export interface FormDataEncoderHeaders extends RawHeaders {
"content-type": string;
"content-length"?: string;
}

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/**
* Generates a boundary string for FormData encoder.
*
* @api private
*
* ```js
* import createBoundary from "./util/createBoundary"
*
* createBoundary() // -> n2vw38xdagaq6lrv
* ```
*/
export declare function createBoundary(): string;

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/**
* Escape fieldname following the spec requirements.
*
* See: https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart-form-data
*
* @param name A fieldname to escape
*
* @api private
*/
export declare const escapeName: (name: unknown) => string;

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/**
* Turns ReadableStream into async iterable when the `Symbol.asyncIterable` is not implemented on given stream.
*
* @param source A ReadableStream to create async iterator for
*/
export declare const getStreamIterator: (source: ReadableStream<Uint8Array> | AsyncIterable<Uint8Array>) => AsyncIterable<Uint8Array>;

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node_modules/form-data-encoder/@type/util/isFile.d.ts generated vendored Normal file
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import type { FileLike } from "../FileLike.js";
/**
* Check if given object is `File`.
*
* Note that this function will return `false` for Blob, because the FormDataEncoder expects FormData to return File when a value is binary data.
*
* @param value an object to test
*
* @api public
*
* This function will return `true` for FileAPI compatible `File` objects:
*
* ```
* import {createReadStream} from "node:fs"
*
* import {isFile} from "form-data-encoder"
*
* isFile(new File(["Content"], "file.txt")) // -> true
* ```
*
* However, if you pass a Node.js `Buffer` or `ReadStream`, it will return `false`:
*
* ```js
* import {isFile} from "form-data-encoder"
*
* isFile(Buffer.from("Content")) // -> false
* isFile(createReadStream("path/to/a/file.txt")) // -> false
* ```
*/
export declare const isFile: (value: unknown) => value is FileLike;
/**
* @deprecated use `isFile` instead
*/
export declare const isFileLike: (value: unknown) => value is FileLike;

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import type { FormDataLike } from "../FormDataLike.js";
/**
* Check if given object is FormData
*
* @param value an object to test
*/
export declare const isFormData: (value: unknown) => value is FormDataLike;

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/**
* Checks if given value is a function.
*
* @api private
*/
export declare const isFunction: (value: unknown) => value is Function;

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export declare function isPlainObject(value: unknown): value is object;

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/**
* Normalize non-File value following the spec requirements.
*
* See: https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart-form-data
*
* @param value A value to normalize
*
* @api private
*/
export declare const normalizeValue: (value: unknown) => string;

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import type { FormDataEncoderHeaders, RawHeaders } from "./Headers.js";
export declare const proxyHeaders: (object: RawHeaders) => FormDataEncoderHeaders;

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node_modules/form-data-encoder/lib/FileLike.js generated vendored Normal file
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export {};

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node_modules/form-data-encoder/lib/FormDataEncoder.js generated vendored Normal file
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var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
if (kind === "m") throw new TypeError("Private method is not writable");
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _FormDataEncoder_instances, _FormDataEncoder_CRLF, _FormDataEncoder_CRLF_BYTES, _FormDataEncoder_CRLF_BYTES_LENGTH, _FormDataEncoder_DASHES, _FormDataEncoder_encoder, _FormDataEncoder_footer, _FormDataEncoder_form, _FormDataEncoder_options, _FormDataEncoder_getFieldHeader, _FormDataEncoder_getContentLength;
import { getStreamIterator } from "./util/getStreamIterator.js";
import { createBoundary } from "./util/createBoundary.js";
import { normalizeValue } from "./util/normalizeValue.js";
import { isPlainObject } from "./util/isPlainObject.js";
import { proxyHeaders } from "./util/proxyHeaders.js";
import { isFormData } from "./util/isFormData.js";
import { escapeName } from "./util/escapeName.js";
import { isFile } from "./util/isFile.js";
const defaultOptions = {
enableAdditionalHeaders: false
};
const readonlyProp = { writable: false, configurable: false };
export class FormDataEncoder {
constructor(form, boundaryOrOptions, options) {
_FormDataEncoder_instances.add(this);
_FormDataEncoder_CRLF.set(this, "\r\n");
_FormDataEncoder_CRLF_BYTES.set(this, void 0);
_FormDataEncoder_CRLF_BYTES_LENGTH.set(this, void 0);
_FormDataEncoder_DASHES.set(this, "-".repeat(2));
_FormDataEncoder_encoder.set(this, new TextEncoder());
_FormDataEncoder_footer.set(this, void 0);
_FormDataEncoder_form.set(this, void 0);
_FormDataEncoder_options.set(this, void 0);
if (!isFormData(form)) {
throw new TypeError("Expected first argument to be a FormData instance.");
}
let boundary;
if (isPlainObject(boundaryOrOptions)) {
options = boundaryOrOptions;
}
else {
boundary = boundaryOrOptions;
}
if (!boundary) {
boundary = createBoundary();
}
if (typeof boundary !== "string") {
throw new TypeError("Expected boundary argument to be a string.");
}
if (options && !isPlainObject(options)) {
throw new TypeError("Expected options argument to be an object.");
}
__classPrivateFieldSet(this, _FormDataEncoder_form, Array.from(form.entries()), "f");
__classPrivateFieldSet(this, _FormDataEncoder_options, { ...defaultOptions, ...options }, "f");
__classPrivateFieldSet(this, _FormDataEncoder_CRLF_BYTES, __classPrivateFieldGet(this, _FormDataEncoder_encoder, "f").encode(__classPrivateFieldGet(this, _FormDataEncoder_CRLF, "f")), "f");
__classPrivateFieldSet(this, _FormDataEncoder_CRLF_BYTES_LENGTH, __classPrivateFieldGet(this, _FormDataEncoder_CRLF_BYTES, "f").byteLength, "f");
this.boundary = `form-data-boundary-${boundary}`;
this.contentType = `multipart/form-data; boundary=${this.boundary}`;
__classPrivateFieldSet(this, _FormDataEncoder_footer, __classPrivateFieldGet(this, _FormDataEncoder_encoder, "f").encode(`${__classPrivateFieldGet(this, _FormDataEncoder_DASHES, "f")}${this.boundary}${__classPrivateFieldGet(this, _FormDataEncoder_DASHES, "f")}${__classPrivateFieldGet(this, _FormDataEncoder_CRLF, "f").repeat(2)}`), "f");
const headers = {
"Content-Type": this.contentType
};
const contentLength = __classPrivateFieldGet(this, _FormDataEncoder_instances, "m", _FormDataEncoder_getContentLength).call(this);
if (contentLength) {
this.contentLength = contentLength;
headers["Content-Length"] = contentLength;
}
this.headers = proxyHeaders(Object.freeze(headers));
Object.defineProperties(this, {
boundary: readonlyProp,
contentType: readonlyProp,
contentLength: readonlyProp,
headers: readonlyProp
});
}
getContentLength() {
return this.contentLength == null ? undefined : Number(this.contentLength);
}
*values() {
for (const [name, raw] of __classPrivateFieldGet(this, _FormDataEncoder_form, "f")) {
const value = isFile(raw) ? raw : __classPrivateFieldGet(this, _FormDataEncoder_encoder, "f").encode(normalizeValue(raw));
yield __classPrivateFieldGet(this, _FormDataEncoder_instances, "m", _FormDataEncoder_getFieldHeader).call(this, name, value);
yield value;
yield __classPrivateFieldGet(this, _FormDataEncoder_CRLF_BYTES, "f");
}
yield __classPrivateFieldGet(this, _FormDataEncoder_footer, "f");
}
async *encode() {
for (const part of this.values()) {
if (isFile(part)) {
yield* getStreamIterator(part.stream());
}
else {
yield part;
}
}
}
[(_FormDataEncoder_CRLF = new WeakMap(), _FormDataEncoder_CRLF_BYTES = new WeakMap(), _FormDataEncoder_CRLF_BYTES_LENGTH = new WeakMap(), _FormDataEncoder_DASHES = new WeakMap(), _FormDataEncoder_encoder = new WeakMap(), _FormDataEncoder_footer = new WeakMap(), _FormDataEncoder_form = new WeakMap(), _FormDataEncoder_options = new WeakMap(), _FormDataEncoder_instances = new WeakSet(), _FormDataEncoder_getFieldHeader = function _FormDataEncoder_getFieldHeader(name, value) {
let header = "";
header += `${__classPrivateFieldGet(this, _FormDataEncoder_DASHES, "f")}${this.boundary}${__classPrivateFieldGet(this, _FormDataEncoder_CRLF, "f")}`;
header += `Content-Disposition: form-data; name="${escapeName(name)}"`;
if (isFile(value)) {
header += `; filename="${escapeName(value.name)}"${__classPrivateFieldGet(this, _FormDataEncoder_CRLF, "f")}`;
header += `Content-Type: ${value.type || "application/octet-stream"}`;
}
const size = isFile(value) ? value.size : value.byteLength;
if (__classPrivateFieldGet(this, _FormDataEncoder_options, "f").enableAdditionalHeaders === true
&& size != null
&& !isNaN(size)) {
header += `${__classPrivateFieldGet(this, _FormDataEncoder_CRLF, "f")}Content-Length: ${isFile(value) ? value.size : value.byteLength}`;
}
return __classPrivateFieldGet(this, _FormDataEncoder_encoder, "f").encode(`${header}${__classPrivateFieldGet(this, _FormDataEncoder_CRLF, "f").repeat(2)}`);
}, _FormDataEncoder_getContentLength = function _FormDataEncoder_getContentLength() {
let length = 0;
for (const [name, raw] of __classPrivateFieldGet(this, _FormDataEncoder_form, "f")) {
const value = isFile(raw) ? raw : __classPrivateFieldGet(this, _FormDataEncoder_encoder, "f").encode(normalizeValue(raw));
const size = isFile(value) ? value.size : value.byteLength;
if (size == null || isNaN(size)) {
return undefined;
}
length += __classPrivateFieldGet(this, _FormDataEncoder_instances, "m", _FormDataEncoder_getFieldHeader).call(this, name, value).byteLength;
length += size;
length += __classPrivateFieldGet(this, _FormDataEncoder_CRLF_BYTES_LENGTH, "f");
}
return String(length + __classPrivateFieldGet(this, _FormDataEncoder_footer, "f").byteLength);
}, Symbol.iterator)]() {
return this.values();
}
[Symbol.asyncIterator]() {
return this.encode();
}
}

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node_modules/form-data-encoder/lib/FormDataLike.js generated vendored Normal file
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export {};

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node_modules/form-data-encoder/lib/index.js generated vendored Normal file
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export * from "./FormDataEncoder.js";
export * from "./FileLike.js";
export * from "./FormDataLike.js";
export * from "./util/isFile.js";
export * from "./util/isFormData.js";

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node_modules/form-data-encoder/lib/util/Headers.js generated vendored Normal file
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export {};

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const alphabet = "abcdefghijklmnopqrstuvwxyz0123456789";
export function createBoundary() {
let size = 16;
let res = "";
while (size--) {
res += alphabet[(Math.random() * alphabet.length) << 0];
}
return res;
}

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export const escapeName = (name) => String(name)
.replace(/\r/g, "%0D")
.replace(/\n/g, "%0A")
.replace(/"/g, "%22");

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import { isFunction } from "./isFunction.js";
const isAsyncIterable = (value) => (isFunction(value[Symbol.asyncIterator]));
async function* readStream(readable) {
const reader = readable.getReader();
while (true) {
const { done, value } = await reader.read();
if (done) {
break;
}
yield value;
}
}
export const getStreamIterator = (source) => {
if (isAsyncIterable(source)) {
return source;
}
if (isFunction(source.getReader)) {
return readStream(source);
}
throw new TypeError("Unsupported data source: Expected either ReadableStream or async iterable.");
};

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node_modules/form-data-encoder/lib/util/isFile.js generated vendored Normal file
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import { isFunction } from "./isFunction.js";
export const isFile = (value) => Boolean(value
&& typeof value === "object"
&& isFunction(value.constructor)
&& value[Symbol.toStringTag] === "File"
&& isFunction(value.stream)
&& value.name != null);
export const isFileLike = isFile;

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import { isFunction } from "./isFunction.js";
export const isFormData = (value) => Boolean(value
&& isFunction(value.constructor)
&& value[Symbol.toStringTag] === "FormData"
&& isFunction(value.append)
&& isFunction(value.getAll)
&& isFunction(value.entries)
&& isFunction(value[Symbol.iterator]));

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export const isFunction = (value) => (typeof value === "function");

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const getType = (value) => (Object.prototype.toString.call(value).slice(8, -1).toLowerCase());
export function isPlainObject(value) {
if (getType(value) !== "object") {
return false;
}
const pp = Object.getPrototypeOf(value);
if (pp === null || pp === undefined) {
return true;
}
const Ctor = pp.constructor && pp.constructor.toString();
return Ctor === Object.toString();
}

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export const normalizeValue = (value) => String(value)
.replace(/\r|\n/g, (match, i, str) => {
if ((match === "\r" && str[i + 1] !== "\n")
|| (match === "\n" && str[i - 1] !== "\r")) {
return "\r\n";
}
return match;
});

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function getProperty(target, prop) {
if (typeof prop === "string") {
for (const [name, value] of Object.entries(target)) {
if (prop.toLowerCase() === name.toLowerCase()) {
return value;
}
}
}
return undefined;
}
export const proxyHeaders = (object) => new Proxy(object, {
get: (target, prop) => getProperty(target, prop),
has: (target, prop) => getProperty(target, prop) !== undefined
});

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The MIT License (MIT)
Copyright (c) 2021-present Nick K.
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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node_modules/form-data-encoder/package.json generated vendored Normal file
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{
"type": "module",
"name": "form-data-encoder",
"version": "2.1.4",
"description": "Encode FormData content into the multipart/form-data format",
"repository": "octet-stream/form-data-encoder",
"sideEffects": false,
"engines": {
"node": ">= 14.17"
},
"keywords": [
"form-data",
"encoder",
"multipart",
"files-upload",
"async-iterator",
"spec-compatible",
"form"
],
"main": "./lib/index.js",
"module": "./lib/index.js",
"exports": {
"types": "./@type/index.d.ts",
"default": "./lib/index.js"
},
"types": "./@type/index.d.ts",
"scripts": {
"eslint": "eslint src/**/*.ts",
"staged": "lint-staged",
"coverage": "c8 npm test",
"ci": "c8 npm test && c8 report --reporter=json",
"build:types": "tsc --project tsconfig.d.ts.json",
"build": "tsc && npm run build:types",
"test": "ava --fail-fast",
"cleanup": "del-cli @type lib",
"prepare": "npm run cleanup && npm run build",
"_postinstall": "husky install",
"prepublishOnly": "pinst --disable",
"postpublish": "pinst --enable"
},
"author": "Nick K.",
"license": "MIT",
"devDependencies": {
"@octetstream/eslint-config": "6.2.2",
"@types/mime-types": "2.1.1",
"@types/node": "18.11.9",
"@types/sinon": "^10.0.13",
"@typescript-eslint/eslint-plugin": "5.44.0",
"@typescript-eslint/parser": "5.44.0",
"ava": "5.1.0",
"c8": "7.12.0",
"del-cli": "5.0.0",
"eslint": "8.28.0",
"eslint-config-airbnb-typescript": "17.0.0",
"eslint-import-resolver-typescript": "3.5.2",
"eslint-plugin-ava": "13.2.0",
"eslint-plugin-import": "^2.26.0",
"eslint-plugin-jsx-a11y": "6.6.1",
"eslint-plugin-react": "7.31.11",
"formdata-node": "5.0.0",
"husky": "8.0.2",
"lint-staged": "13.0.3",
"pinst": "3.0.0",
"sinon": "^14.0.2",
"ts-node": "10.9.1",
"ttypescript": "1.5.13",
"typescript": "4.9.3",
"web-streams-polyfill": "4.0.0-beta.3"
}
}

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# form-data-encoder
Encode `FormData` content into the `multipart/form-data` format
[![Code Coverage](https://codecov.io/github/octet-stream/form-data-encoder/coverage.svg?branch=master)](https://codecov.io/github/octet-stream/form-data-encoder?branch=master)
[![CI](https://github.com/octet-stream/form-data-encoder/workflows/CI/badge.svg)](https://github.com/octet-stream/form-data-encoder/actions/workflows/ci.yml)
[![ESLint](https://github.com/octet-stream/form-data-encoder/workflows/ESLint/badge.svg)](https://github.com/octet-stream/form-data-encoder/actions/workflows/eslint.yml)
## Requirements
- Node.js v14.17 or higher;
- Runtime should support `TextEncoder`, `TextDecoder`, `WeakMap`, `WeakSet` and async generator functions;
- For TypeScript users: tsc v4.3 or higher.
## Installation
You can install this package using npm:
```sh
npm install form-data-encoder
```
Or yarn:
```sh
yarn add form-data-encoder
```
Or pnpm:
```sh
pnpm add form-data-encoder
```
## Usage
1. To start the encoding process, you need to create a new Encoder instance with the FormData you want to encode:
```js
import {Readable} from "stream"
import {FormData, File} from "formdata-node"
import {FormDataEncoder} from "form-data-encoder"
import fetch from "node-fetch"
const form = new FormData()
form.set("greeting", "Hello, World!")
form.set("file", new File(["On Soviet Moon landscape see binoculars through YOU"], "file.txt"))
const encoder = new FormDataEncoder(form)
const options = {
method: "post",
// Set request headers provided by the Encoder.
// The `headers` property has `Content-Type` and `Content-Length` headers.
headers: encoder.headers,
// Create a Readable stream from the Encoder.
// You can omit usage of `Readable.from` for HTTP clients whose support async iterables in request body.
// The Encoder will yield FormData content portions encoded into the multipart/form-data format as node-fetch consumes the stream.
body: Readable.from(encoder.encode()) // or just Readable.from(encoder)
}
const response = await fetch("https://httpbin.org/post", options)
console.log(await response.json())
```
2. Encoder support different spec-compatible FormData implementations. Let's try it with [`formdata-polyfill`](https://github.com/jimmywarting/FormData):
```js
import {Readable} from "stream"
import {FormDataEncoder} from "form-data-encoder"
import {FormData} from "formdata-polyfill/esm-min.js"
import {File} from "fetch-blob" // v3
const form = new FormData()
form.set("field", "Some value")
form.set("file", new File(["File content goes here"], "file.txt"))
const encoder = new FormDataEncoder(form)
const options = {
method: "post",
headers: encoder.headers,
body: Readable.from(encoder)
}
await fetch("https://httpbin.org/post", options)
```
3. Because the Encoder is iterable (it has both Symbol.asyncIterator and Symbol.iterator methods), you can use it with different targets. Let's say you want to convert FormData content into `Blob`, for that you can write a function like this:
```js
import {Readable} from "stream"
import {FormDataEncoder} from "form-data-encoder"
import {FormData, File, Blob, fileFromPath} from "formdata-node"
import fetch from "node-fetch"
const form = new FormData()
form.set("field", "Just a random string")
form.set("file", new File(["Using files is class amazing"], "file.txt"))
form.set("fileFromPath", await fileFromPath("path/to/a/file.txt"))
// Note 1: When using with native Blob or fetch-blob@2 you might also need to generate boundary string for your FormDataEncoder instance
// because Blob will lowercase value of the `type` option and default boundary generator produces a string with both lower and upper cased alphabetical characters. Math.random() should be enough to fix this:
// const encoder = new FormDataEncoder(form, String(Math.random()))
const encoder = new FormDataEncoder(form)
const options = {
method: "post",
// Note 2: To use this approach with fetch-blob@2 you probably gonna need to convert the encoder parts output to an array first:
// new Blob([...encoder], {type: encoder.contentType})
body: new Blob(encoder, {type: encoder.contentType})
}
const response = await fetch("https://httpbin.org/post", options)
console.log(await response.json())
```
4. Here's FormData to Blob conversion with async-iterator approach:
```js
import {FormData} from "formdata-polyfill/esm-min.js"
import {blobFrom} from "fetch-blob/from.js"
import {FormDataEncoder} from "form-data-encoder"
import Blob from "fetch-blob"
import fetch from "node-fetch"
// This approach may require much more RAM compared to the previous one, but it works too.
async function toBlob(form) {
const encoder = new Encoder(form)
const chunks = []
for await (const chunk of encoder) {
chunks.push(chunk)
}
return new Blob(chunks, {type: encoder.contentType})
}
const form = new FormData()
form.set("name", "John Doe")
form.set("avatar", await blobFrom("path/to/an/avatar.png"), "avatar.png")
const options = {
method: "post",
body: await toBlob(form)
}
await fetch("https://httpbin.org/post", options)
```
5. Another way to convert FormData parts to blob using `form-data-encoder` is making a Blob-ish class:
```js
import {Readable} from "stream"
import {FormDataEncoder} from "form-data-encoder"
import {FormData} from "formdata-polyfill/esm-min.js"
import {blobFrom} from "fetch-blob/from.js"
import Blob from "fetch-blob"
import fetch from "node-fetch"
class BlobDataItem {
constructor(encoder) {
this.#encoder = encoder
this.#size = encoder.headers["Content-Length"]
this.#type = encoder.headers["Content-Type"]
}
get type() {
return this.#type
}
get size() {
return this.#size
}
stream() {
return Readable.from(this.#encoder)
}
get [Symbol.toStringTag]() {
return "Blob"
}
}
const form = new FormData()
form.set("name", "John Doe")
form.set("avatar", await blobFrom("path/to/an/avatar.png"), "avatar.png")
const encoder = new FormDataEncoder(form)
// Note that node-fetch@2 performs more strictness tests for Blob objects, so you may need to do extra steps before you set up request body (like, maybe you'll need to instaniate a Blob with BlobDataItem as one of its blobPart)
const blob = new BlobDataItem(enocoder) // or new Blob([new BlobDataItem(enocoder)], {type: encoder.contentType})
const options = {
method: "post",
body: blob
}
await fetch("https://httpbin.org/post", options)
```
6. In this example we will pull FormData content into the ReadableStream:
```js
// This module is only necessary when you targeting Node.js or need web streams that implement Symbol.asyncIterator
import {ReadableStream} from "web-streams-polyfill/ponyfill/es2018"
import {FormDataEncoder} from "form-data-encoder"
import {FormData} from "formdata-node"
import fetch from "node-fetch"
function toReadableStream(encoder) {
const iterator = encoder.encode()
return new ReadableStream({
async pull(controller) {
const {value, done} = await iterator.next()
if (done) {
return controller.close()
}
controller.enqueue(value)
}
})
}
const form = new FormData()
form.set("field", "My hovercraft is full of eels")
const encoder = new FormDataEncoder(form)
const options = {
method: "post",
headers: encoder.headers,
body: toReadableStream(encoder)
}
// Note that this example requires `fetch` to support Symbol.asyncIterator, which node-fetch lacks of (but will support eventually)
await fetch("https://httpbin.org/post", options)
```
7. Speaking of async iterables - if HTTP client supports them, you can use encoder like this:
```js
import {FormDataEncoder} from "form-data-encoder"
import {FormData} from "formdata-node"
import fetch from "node-fetch"
const form = new FormData()
form.set("field", "My hovercraft is full of eels")
const encoder = new FormDataEncoder(form)
const options = {
method: "post",
headers: encoder.headers,
body: encoder
}
await fetch("https://httpbin.org/post", options)
```
8. ...And for those client whose supporting form-data-encoder out of the box, the usage will be much, much more simpler:
```js
import {FormData} from "formdata-node" // Or any other spec-compatible implementation
import fetch from "node-fetch"
const form = new FormData()
form.set("field", "My hovercraft is full of eels")
const options = {
method: "post",
body: form
}
// Note that node-fetch does NOT support form-data-encoder
await fetch("https://httpbin.org/post", options)
```
## API
### `class FormDataEncoder`
##### `constructor(form[, boundary, options]) -> {FormDataEncoder}`
- **{FormDataLike}** form - FormData object to encode. This object must be a spec-compatible FormData implementation.
- **{string}** [boundary] - An optional boundary string that will be used by the encoder. If there's no boundary string is present, FormDataEncoder will generate it automatically.
- **{object}** [options] - FormDataEncoder options.
- **{boolean}** [options.enableAdditionalHeaders = false] - When enabled, the encoder will emit additional per part headers, such as `Content-Length`. Please note that the web clients do not include these, so when enabled this option might cause an error if `multipart/form-data` does not consider additional headers.
Creates a `multipart/form-data` encoder.
#### Instance properties
##### `boundary -> {string}`
Returns boundary string.
##### `contentType -> {string}`
Returns Content-Type header.
##### `contentLength -> {string}`
Return Content-Length header.
##### `headers -> {object}`
Returns headers object with Content-Type and Content-Length header.
#### Instance methods
##### `values() -> {Generator<Uint8Array | FileLike, void, undefined>}`
Creates an iterator allowing to go through form-data parts (with metadata).
This method **will not** read the files.
##### `encode() -> {AsyncGenerator<Uint8Array, void, undefined>}`
Creates an async iterator allowing to perform the encoding by portions.
This method **will** also read files.
##### `[Symbol.iterator]() -> {Generator<Uint8Array | FileLike, void, undefined>}`
An alias for `Encoder#values()` method.
##### `[Symbol.asyncIterator]() -> {AsyncGenerator<Uint8Array, void, undefined>}`
An alias for `Encoder#encode()` method.
### `isFile(value) -> {boolean}`
Check if a value is File-ish object.
- **{unknown}** value - a value to test
### `isFormData(value) -> {boolean}`
Check if a value is FormData-ish object.
- **{unknown}** value - a value to test