happy-dom
Version:
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
161 lines • 5.2 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
const buffer_1 = require("buffer");
const PropertySymbol = __importStar(require("../PropertySymbol.cjs"));
/**
* Reference:
* https://developer.mozilla.org/en-US/docs/Web/API/Blob.
*
* Based on:
* https://github.com/jsdom/jsdom/blob/master/lib/jsdom/living/file-api/Blob-impl.js (MIT licensed).
*/
class Blob {
/**
* Constructor.
*
* @param bits Bits.
* @param [options] Options.
* @param [options.type] MIME type.
*/
constructor(bits, options) {
this.type = '';
this[_a] = null;
const buffers = [];
if (bits) {
for (const bit of bits) {
let buffer;
if (bit instanceof ArrayBuffer) {
buffer = buffer_1.Buffer.from(new Uint8Array(bit));
}
else if (bit instanceof Blob) {
buffer = bit[PropertySymbol.buffer];
}
else if (bit instanceof buffer_1.Buffer) {
buffer = bit;
}
else if (ArrayBuffer.isView(bit)) {
buffer = buffer_1.Buffer.from(new Uint8Array(bit.buffer, bit.byteOffset, bit.byteLength));
}
else {
buffer = buffer_1.Buffer.from(typeof bit === 'string' ? bit : String(bit));
}
buffers.push(buffer);
}
}
this[PropertySymbol.buffer] = buffer_1.Buffer.concat(buffers);
if (options && options.type && options.type.match(/^[\u0020-\u007E]*$/)) {
this.type = String(options.type).toLowerCase();
}
}
/**
* Returns size.
*
* @returns Size.
*/
get size() {
return this[PropertySymbol.buffer].length;
}
/**
* Slices the blob.
*
* @param start Start.
* @param end End.
* @param contentType Content type.
* @returns New Blob.
*/
slice(start = 0, end = null, contentType = '') {
const size = this.size;
let relativeStart;
let relativeEnd;
let relativeContentType;
if (start === undefined) {
relativeStart = 0;
}
else if (start < 0) {
relativeStart = Math.max(size + start, 0);
}
else {
relativeStart = Math.min(start, size);
}
if (end === null) {
relativeEnd = size;
}
else if (end < 0) {
relativeEnd = Math.max(size + end, 0);
}
else {
relativeEnd = Math.min(end, size);
}
if (contentType === undefined) {
relativeContentType = '';
}
else {
// Sanitization (lower case and invalid char check) is done in the
// Constructor
relativeContentType = contentType;
}
const span = Math.max(relativeEnd - relativeStart, 0);
const buffer = this[PropertySymbol.buffer];
const slicedBuffer = buffer.slice(relativeStart, relativeStart + span);
const blob = new Blob([], { type: relativeContentType });
blob[PropertySymbol.buffer] = slicedBuffer;
return blob;
}
/**
* Returns a Promise that resolves to a ArrayBuffer.
*
* @returns ArrayBuffer.
*/
// Reference:
// https://github.com/web-std/io/blob/c88170bf24f064adfbb3586a21fb76650ca5a9ab/packages/blob/src/blob.js#L139-L148
// https://stackoverflow.com/questions/8609289/convert-a-binary-nodejs-buffer-to-javascript-arraybuffer
/**
*
*/
async arrayBuffer() {
return new Uint8Array(this[PropertySymbol.buffer]).buffer;
}
/**
* Returns a Promise that resolves to a text.
*
* @returns Text.
*/
async text() {
return this[PropertySymbol.buffer].toString();
}
/**
* Returns the object converted to string.
*
* @returns String.
*/
toString() {
return '[object Blob]';
}
}
_a = PropertySymbol.buffer;
exports.default = Blob;
//# sourceMappingURL=Blob.cjs.map