All files / lib/internal/modules/esm get_source.js

95.55% Statements 43/45
87.5% Branches 14/16
100% Functions 1/1
95.55% Lines 43/45

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 493x 493x 493x 493x 460x 487x 33x 33x 1x 1x 32x 33x 33x     493x 3x 3x 486x 493x 133x  
'use strict';
 
const {
  RegExpPrototypeExec,
  decodeURIComponent,
} = primordials;
const { getOptionValue } = require('internal/options');
// Do not eagerly grab .manifest, it may be in TDZ
const policy = getOptionValue('--experimental-policy') ?
  require('internal/process/policy') :
  null;
 
const { Buffer } = require('buffer');
 
const fs = require('internal/fs/promises').exports;
const { URL } = require('internal/url');
const {
  ERR_INVALID_URL,
  ERR_INVALID_URL_SCHEME,
} = require('internal/errors').codes;
const readFileAsync = fs.readFile;
 
const DATA_URL_PATTERN = /^[^/]+\/[^,;]+(?:[^,]*?)(;base64)?,([\s\S]*)$/;
 
async function defaultGetSource(url, { format } = {}, defaultGetSource) {
  const parsed = new URL(url);
  let source;
  if (parsed.protocol === 'file:') {
    source = await readFileAsync(parsed);
  } else if (parsed.protocol === 'data:') {
    const match = RegExpPrototypeExec(DATA_URL_PATTERN, parsed.pathname);
    if (!match) {
      throw new ERR_INVALID_URL(url);
    }
    const { 1: base64, 2: body } = match;
    source = Buffer.from(decodeURIComponent(body), base64 ? 'base64' : 'utf8');
  } else {
    throw new ERR_INVALID_URL_SCHEME(['file', 'data']);
  }
  if (policy?.manifest) {
    policy.manifest.assertIntegrity(parsed, source);
  }
  return source;
}
exports.defaultGetSource = defaultGetSource;