1 | import { nanoid } from 'nanoid/non-secure'
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2 | import { readdir } from 'node:fs/promises'
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3 | import { tmpdir } from 'node:os'
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4 | import { join } from 'node:path'
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5 | import { rm, SizeLimitError } from 'size-limit'
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6 |
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7 | import { convertConfig } from './convert-config.js'
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8 | import { getConfig } from './get-config.js'
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9 | import { runWebpack } from './run-webpack.js'
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10 |
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11 | const WEBPACK_EMPTY_PROJECT = 0
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12 | const WEBPACK_EMPTY_PROJECT_GZIP = 20
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13 | const WEBPACK_EMPTY_PROJECT_IMPORT = 37
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14 | const WEBPACK_EMPTY_PROJECT_IMPORT_GZIP = 57
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15 |
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16 | function getFiles(stats, check) {
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17 | let entries = {}
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18 | if (check.entry) {
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19 | for (let i of check.entry) {
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20 | if (stats.entrypoints[i]) {
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21 | entries[i] = stats.entrypoints[i]
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22 | } else {
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23 | throw new SizeLimitError('unknownEntry', i)
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24 | }
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25 | }
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26 | } else {
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27 | entries = stats.entrypoints
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28 | }
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29 |
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30 | return Object.keys(entries)
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31 | .reduce((assets, i) => assets.concat(entries[i].assets), [])
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32 | .map(({ name }) => {
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33 | if (check.webpackConfig.output && check.webpackConfig.output.path) {
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34 | return join(check.webpackConfig.output.path, name)
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35 | } else {
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36 | return join(process.cwd(), 'dist', name)
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37 | }
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38 | })
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39 | }
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40 |
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41 | async function isDirNotEmpty(dir) {
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42 | try {
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43 | let files = await readdir(dir)
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44 | return !!files.length
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45 | } catch (e) {
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46 | if (e.code === 'ENOENT') return false
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47 | throw e
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48 | }
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49 | }
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50 |
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51 | async function loadConfig(config) {
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52 | return typeof config === 'function' ? config() : config
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53 | }
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54 |
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55 | export default [
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56 | {
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57 | async before(config) {
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58 | if (config.saveBundle) {
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59 | if (config.cleanDir) {
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60 | await rm(config.saveBundle)
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61 | } else {
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62 | let notEmpty = await isDirNotEmpty(config.saveBundle)
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63 | if (notEmpty) {
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64 | throw new SizeLimitError('bundleDirNotEmpty', config.saveBundle)
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65 | }
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66 | }
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67 | }
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68 | },
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69 |
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70 | async finally(config, check) {
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71 | if (check.webpackOutput && !config.saveBundle) {
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72 | await rm(check.webpackOutput)
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73 | }
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74 | },
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75 |
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76 | name: '@size-limit/webpack',
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77 |
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78 | async step20(config, check) {
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79 | if (check.webpack === false) return
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80 | check.webpackOutput = config.saveBundle
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81 | if (!check.webpackOutput) {
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82 | check.webpackOutput = join(tmpdir(), `size-limit-${nanoid()}`)
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83 | }
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84 | if (check.config) {
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85 | let configModule = await import(check.config)
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86 | check.webpackConfig = await loadConfig(configModule.default)
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87 | convertConfig(check.webpackConfig, config.configPath)
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88 | } else {
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89 | check.webpackConfig = await getConfig(
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90 | config,
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91 | check,
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92 | check.webpackOutput
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93 | )
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94 | if (check.modifyWebpackConfig) {
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95 | check.webpackConfig = check.modifyWebpackConfig(check.webpackConfig)
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96 | }
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97 | }
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98 | },
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99 | async step40(config, check) {
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100 | if (check.webpackConfig && check.webpack !== false) {
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101 | check.bundles = getFiles(await runWebpack(check), check)
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102 | }
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103 | },
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104 |
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105 | async step61(config, check) {
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106 | if (check.bundles) {
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107 | if (typeof check.size === 'undefined') {
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108 | throw new SizeLimitError('missedPlugin', 'file')
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109 | }
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110 | if (check.import && check.gzip === false) {
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111 | check.size -= WEBPACK_EMPTY_PROJECT_IMPORT
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112 | } else if (check.import) {
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113 | check.size -= WEBPACK_EMPTY_PROJECT_IMPORT_GZIP
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114 | } else if (check.gzip === false) {
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115 | check.size -= WEBPACK_EMPTY_PROJECT
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116 | } else {
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117 | check.size -= WEBPACK_EMPTY_PROJECT_GZIP
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118 | }
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119 | }
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120 | },
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121 |
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122 | wait40: 'Adding to empty webpack project'
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123 | }
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124 | ]
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