1 | 'use strict';
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2 | const hackMoment = require('./transformers/hack-moment');
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3 | const processEnv = require('./transformers/process-env');
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4 | const nodeEnvCondition = require('./transformers/node-env-condition');
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5 | const alias = require('./transformers/alias');
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6 | const conventionalAlias = require('./transformers/conventional-alias');
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7 | const text = require('./transformers/text');
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8 | const json = require('./transformers/json');
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9 | const wasm = require('./transformers/wasm');
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10 | const esmToCjs = require('./transformers/esm-to-cjs');
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11 | const replace = require('./transformers/replace');
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12 | const cjsToAmd = require('./transformers/cjs-to-amd');
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13 | const nameAmdDefine = require('./transformers/name-amd-define');
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14 | const shimAmd = require('./transformers/shim-amd');
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15 | const transform = require('./transform');
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16 | const {ext} = require('dumber-module-loader/dist/id-utils');
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17 | const {generateHash} = require('./shared');
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18 |
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19 | function unWrap(cached) {
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20 | return Promise.resolve(cached)
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21 | .then(result => {
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22 | if (!result) {
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23 | throw new Error();
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24 | } else if (result instanceof Error) {
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25 | throw result;
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26 | }
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27 | return result;
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28 | })
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29 | }
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30 |
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31 |
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32 | module.exports = function(unit, opts = {}) {
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33 |
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34 | if (unit.defined && unit.deps) return Promise.resolve(unit);
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35 |
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36 | const {cache, depsFinder} = opts;
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37 | const {contents, path, sourceMap, moduleId, packageName, packageMainPath, shim} = unit;
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38 |
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39 | if (
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40 | packageName &&
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41 | (moduleId !== packageName && !moduleId.startsWith(packageName + '/'))
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42 | ) {
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43 | return Promise.reject(new Error('module "' + moduleId + '" is not in package "' + packageName + '"'));
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44 | }
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45 |
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46 | let hash;
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47 |
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48 | let tryCache;
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49 | if (cache) {
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50 | const key = [
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51 | process.env.NODE_ENV || '',
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52 | path,
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53 | moduleId,
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54 | packageName,
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55 | packageMainPath,
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56 | JSON.stringify(shim),
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57 | depsFinder ? depsFinder.toString() : '',
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58 | contents,
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59 | JSON.stringify(sourceMap)
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60 | ].join('|');
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61 | hash = generateHash(key);
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62 | tryCache = unWrap(cache.getCache(hash, {packageName, moduleId, size: contents.length}));
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63 | } else {
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64 | tryCache = Promise.reject();
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65 | }
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66 |
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67 | return tryCache.catch(() => {
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68 | const transformers = [];
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69 | const extname = ext(path);
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70 | if (extname === '.js' || extname === '.cjs' || extname === '.mjs') {
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71 | transformers.push(
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72 | hackMoment,
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73 | processEnv,
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74 | nodeEnvCondition,
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75 | esmToCjs,
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76 | replace,
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77 | cjsToAmd,
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78 | nameAmdDefine,
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79 | shimAmd
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80 | );
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81 | } else if (extname === '.wasm') {
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82 | transformers.push(wasm);
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83 | } else if (extname === '.json') {
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84 | transformers.push(json);
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85 | } else {
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86 |
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87 | transformers.push(text);
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88 | }
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89 |
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90 |
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91 | transformers.push(alias);
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92 |
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93 | transformers.push(conventionalAlias, alias);
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94 |
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95 | if (depsFinder) {
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96 | transformers.push(function customDepsFinder(unit) {
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97 |
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98 | return new Promise(resolve => {
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99 |
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100 | resolve(depsFinder(unit.path, contents));
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101 | }).then(deps => ({deps}));
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102 | });
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103 | }
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104 |
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105 | return transform(unit, ...transformers)
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106 | .then(traced => {
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107 | if (cache) cache.setCache(hash, traced);
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108 | return traced;
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109 | });
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110 | });
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111 | };
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