@web-std/form-data/dist/src/form-data.cjs.map

Web API compatible Form Data implementation

{"version":3,"file":"form-data.cjs","sources":["../../src/form-data.js"],"sourcesContent":["/**\n * @implements {globalThis.FormData}\n */\nexport class FormData {\n  /**\n   * @param {HTMLFormElement} [form]\n   */\n  constructor(form) {\n    /**\n     * @private\n     * @readonly\n     * @type {Array<[string, FormDataEntryValue]>}\n     */\n    this._entries = []\n\n    Object.defineProperty(this, \"_entries\", { enumerable: false })\n\n    if (isHTMLFormElement(form)) {\n      for (const element of form.elements) {\n        if (isSelectElement(element)) {\n          for (const option of element.options) {\n            if (option.selected) {\n              this.append(element.name, option.value);\n            }\n          }\n        } else if (\n          isInputElement(element) &&\n          (element.checked || ![\"radio\", \"checkbox\"].includes(element.type)) &&\n          element.name\n        ) {\n          this.append(element.name, element.value);\n        }\n      }\n    }\n  }\n  get [Symbol.toStringTag]() {\n    return \"FormData\"\n  }\n\n  /**\n   * Appends a new value onto an existing key inside a FormData object, or adds\n   * the key if it does not already exist.\n   *\n   * The difference between `set` and `append` is that if the specified key\n   * already exists, `set` will overwrite all existing values with the new one,\n   * whereas `append` will append the new value onto the end of the existing\n   * set of values.\n   *\n   * @param {string} name\n   * @param {string|Blob|File} value - The name of the field whose data is\n   * contained in value.\n   * @param {string} [filename] - The filename reported to the server, when a\n   * value is a `Blob` or a `File`. The default filename for a `Blob` objects is\n   * `\"blob\"`. The default filename for a `File` is the it's name.\n   */\n  append(\n    name,\n    value = panic(\n      new TypeError(\"FormData.append: requires at least 2 arguments\")\n    ),\n    filename\n  ) {\n    this._entries.push([name, toEntryValue(value, filename)])\n  }\n\n  /**\n   * Deletes a key and all its values from a FormData object.\n   *\n   * @param {string} name\n   */\n  delete(\n    name = panic(new TypeError(\"FormData.delete: requires string argument\"))\n  ) {\n    const entries = this._entries\n    let index = 0\n    while (index < entries.length) {\n      const [entryName] = /** @type {[string, FormDataEntryValue]}*/ (\n        entries[index]\n      )\n      if (entryName === name) {\n        entries.splice(index, 1)\n      } else {\n        index++\n      }\n    }\n  }\n\n  /**\n   * Returns the first value associated with a given key from within a\n   * FormData object.\n   *\n   * @param {string} name\n   * @returns {FormDataEntryValue|null}\n   */\n\n  get(name = panic(new TypeError(\"FormData.get: requires string argument\"))) {\n    for (const [entryName, value] of this._entries) {\n      if (entryName === name) {\n        return value\n      }\n    }\n    return null\n  }\n\n  /**\n   * Returns an array of all the values associated with a given key from within\n   * a FormData.\n   *\n   * @param {string} name\n   * @returns {FormDataEntryValue[]}\n   */\n  getAll(\n    name = panic(new TypeError(\"FormData.getAll: requires string argument\"))\n  ) {\n    const values = []\n    for (const [entryName, value] of this._entries) {\n      if (entryName === name) {\n        values.push(value)\n      }\n    }\n    return values\n  }\n\n  /**\n   * Returns a boolean stating whether a FormData object contains a certain key.\n   *\n   * @param {string} name\n   */\n\n  has(name = panic(new TypeError(\"FormData.has: requires string argument\"))) {\n    for (const [entryName] of this._entries) {\n      if (entryName === name) {\n        return true\n      }\n    }\n    return false\n  }\n\n  /**\n   * Sets a new value for an existing key inside a FormData object, or adds the\n   * key/value if it does not already exist.\n   *\n   * @param {string} name\n   * @param {string|Blob|File} value\n   * @param {string} [filename]\n   */\n\n  set(\n    name,\n    value = panic(new TypeError(\"FormData.set: requires at least 2 arguments\")),\n    filename\n  ) {\n    let index = 0\n    const { _entries: entries } = this\n    const entryValue = toEntryValue(value, filename)\n    let wasSet = false\n    while (index < entries.length) {\n      const entry = /** @type {[string, FormDataEntryValue]}*/ (entries[index])\n      if (entry[0] === name) {\n        if (wasSet) {\n          entries.splice(index, 1)\n        } else {\n          wasSet = true\n          entry[1] = entryValue\n          index++\n        }\n      } else {\n        index++\n      }\n    }\n\n    if (!wasSet) {\n      entries.push([name, entryValue])\n    }\n  }\n\n  /**\n   * Method returns an iterator allowing to go through all key/value pairs\n   * contained in this object.\n   */\n  entries() {\n    return this._entries.values()\n  }\n\n  /**\n   * Returns an iterator allowing to go through all keys of the key/value pairs\n   * contained in this object.\n   *\n   * @returns {IterableIterator<string>}\n   */\n  *keys() {\n    for (const [name] of this._entries) {\n      yield name\n    }\n  }\n\n  /**\n   * Returns an iterator allowing to go through all values contained in this\n   * object.\n   *\n   * @returns {IterableIterator<FormDataEntryValue>}\n   */\n  *values() {\n    for (const [_, value] of this._entries) {\n      yield value\n    }\n  }\n\n  [Symbol.iterator]() {\n    return this._entries.values()\n  }\n\n  /**\n   * @param {(value: FormDataEntryValue, key: string, parent: globalThis.FormData) => void} fn\n   * @param {any} [thisArg]\n   * @returns {void}\n   */\n  forEach(fn, thisArg) {\n    for (const [key, value] of this._entries) {\n      fn.call(thisArg, value, key, this)\n    }\n  }\n}\n\n/**\n * @param {any} value\n * @returns {value is HTMLFormElement}\n */\nconst isHTMLFormElement = value =>\n  Object.prototype.toString.call(value) === \"[object HTMLFormElement]\"\n\n/**\n * @param {string|Blob|File} value\n * @param {string} [filename]\n * @returns {FormDataEntryValue}\n */\nconst toEntryValue = (value, filename) => {\n  if (isFile(value)) {\n    return filename != null ? new BlobFile([value], filename, value) : value\n  } else if (isBlob(value)) {\n    return new BlobFile([value], filename != null ? filename : \"blob\")\n  } else {\n    if (filename != null && filename != \"\") {\n      throw new TypeError(\n        \"filename is only supported when value is Blob or File\"\n      )\n    }\n    return `${value}`\n  }\n}\n\n/**\n * @param {any} value\n * @returns {value is File}\n */\nconst isFile = value =>\n  Object.prototype.toString.call(value) === \"[object File]\" &&\n  typeof value.name === \"string\"\n\n/**\n * @param {any} value\n * @returns {value is Blob}\n */\nconst isBlob = value =>\n  Object.prototype.toString.call(value) === \"[object Blob]\"\n\n/**\n * Simple `File` implementation that just wraps a given blob.\n * @implements {globalThis.File}\n */\nconst BlobFile = class File {\n  /**\n   * @param {[Blob]} parts\n   * @param {string} name\n   * @param {FilePropertyBag} [options]\n   */\n  constructor([blob], name, { lastModified = Date.now() } = {}) {\n    this.blob = blob\n    this.name = name\n    this.lastModified = lastModified\n  }\n  get webkitRelativePath() {\n    return \"\"\n  }\n  get size() {\n    return this.blob.size\n  }\n  get type() {\n    return this.blob.type\n  }\n  /**\n   *\n   * @param {number} [start]\n   * @param {number} [end]\n   * @param {string} [contentType]\n   */\n  slice(start, end, contentType) {\n    return this.blob.slice(start, end, contentType)\n  }\n  stream() {\n    return this.blob.stream()\n  }\n  text() {\n    return this.blob.text()\n  }\n  arrayBuffer() {\n    return this.blob.arrayBuffer()\n  }\n  get [Symbol.toStringTag]() {\n    return \"File\"\n  }\n}\n\n/**\n * @param {*} error\n * @returns {never}\n */\nconst panic = error => {\n  throw error\n}\n\n/**\n *\n * @param {Element} element\n * @returns {element is HTMLSelectElement}\n */\nfunction isSelectElement(element) {\n  return element.tagName === \"SELECT\";\n}\n\n/**\n *\n * @param {Element} element\n * @returns {element is HTMLInputElement}\n */\nfunction isInputElement(element) {\n  return element.tagName === \"INPUT\" || element.tagName === 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