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

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100% Branches 9/9
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100% Lines 43/43

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'use strict';
 
const { getOptionValue } = require('internal/options');
const experimentalImportMetaResolve =
  getOptionValue('--experimental-import-meta-resolve');
const {
  PromisePrototypeThen,
  PromiseReject,
} = primordials;
const asyncESM = require('internal/process/esm_loader');
 
function createImportMetaResolve(defaultParentUrl) {
  return async function resolve(specifier, parentUrl = defaultParentUrl) {
    return PromisePrototypeThen(
      asyncESM.esmLoader.resolve(specifier, parentUrl),
      ({ url }) => url,
      (error) => (
        error.code === 'ERR_UNSUPPORTED_DIR_IMPORT' ?
          error.url : PromiseReject(error))
    );
  };
}
 
/**
 * @param {object} meta
 * @param {{url: string}} context
 */
function initializeImportMeta(meta, context) {
  let url = context.url;
 
  // Alphabetical
  if (experimentalImportMetaResolve) {
    meta.resolve = createImportMetaResolve(url);
  }
 
  url = asyncESM.esmLoader.getBaseURL(url);
 
  meta.url = url;
}
 
module.exports = {
  initializeImportMeta
};