File Explorer

/var/lang/lib/node_modules/npm/node_modules/minipass-fetch/lib

This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.

0 dirs
8 files

blob.js2.3 KB · 98 lines

1'use strict'2const { Minipass } = require('minipass')3const TYPE = Symbol('type')4const BUFFER = Symbol('buffer')5 6class Blob {7  constructor (blobParts, options) {8    this[TYPE] = ''9 10    const buffers = []11    let size = 012 13    if (blobParts) {14      const a = blobParts15      const length = Number(a.length)16      for (let i = 0; i < length; i++) {17        const element = a[i]18        const buffer = element instanceof Buffer ? element19          : ArrayBuffer.isView(element)20            ? Buffer.from(element.buffer, element.byteOffset, element.byteLength)21            : element instanceof ArrayBuffer ? Buffer.from(element)22            : element instanceof Blob ? element[BUFFER]23            : typeof element === 'string' ? Buffer.from(element)24            : Buffer.from(String(element))25        size += buffer.length26        buffers.push(buffer)27      }28    }29 30    this[BUFFER] = Buffer.concat(buffers, size)31 32    const type = options && options.type !== undefined33      && String(options.type).toLowerCase()34    if (type && !/[^\u0020-\u007E]/.test(type)) {35      this[TYPE] = type36    }37  }38 39  get size () {40    return this[BUFFER].length41  }42 43  get type () {44    return this[TYPE]45  }46 47  text () {48    return Promise.resolve(this[BUFFER].toString())49  }50 51  arrayBuffer () {52    const buf = this[BUFFER]53    const off = buf.byteOffset54    const len = buf.byteLength55    const ab = buf.buffer.slice(off, off + len)56    return Promise.resolve(ab)57  }58 59  stream () {60    return new Minipass().end(this[BUFFER])61  }62 63  slice (start, end, type) {64    const size = this.size65    const relativeStart = start === undefined ? 066      : start < 0 ? Math.max(size + start, 0)67      : Math.min(start, size)68    const relativeEnd = end === undefined ? size69      : end < 0 ? Math.max(size + end, 0)70      : Math.min(end, size)71    const span = Math.max(relativeEnd - relativeStart, 0)72 73    const buffer = this[BUFFER]74    const slicedBuffer = buffer.slice(75      relativeStart,76      relativeStart + span77    )78    const blob = new Blob([], { type })79    blob[BUFFER] = slicedBuffer80    return blob81  }82 83  get [Symbol.toStringTag] () {84    return 'Blob'85  }86 87  static get BUFFER () {88    return BUFFER89  }90}91 92Object.defineProperties(Blob.prototype, {93  size: { enumerable: true },94  type: { enumerable: true },95})96 97module.exports = Blob98