-
Notifications
You must be signed in to change notification settings - Fork 10.3k
/
index.js
151 lines (143 loc) · 4.14 KB
/
index.js
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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
const path = require(`path`)
const {
CORE_JS_POLYFILL_EXCLUDE_LIST: polyfillsToExclude,
} = require(`gatsby-legacy-polyfills/dist/exclude`)
const resolve = m => require.resolve(m)
const IS_TEST = (process.env.BABEL_ENV || process.env.NODE_ENV) === `test`
export function loadCachedConfig() {
let pluginBabelConfig = {}
if (!IS_TEST) {
try {
pluginBabelConfig = require(path.join(
process.cwd(),
`./.cache/babelState.json`
))
} catch (err) {
if (err.message.includes(`Cannot find module`)) {
// This probably is being used outside of the Gatsby CLI.
throw Error(
`\`babel-preset-gatsby\` has been loaded, which consumes config generated by the Gatsby CLI. Set \`NODE_ENV=test\` to bypass, or run \`gatsby build\` first.`
)
} else {
throw err
}
}
}
return pluginBabelConfig
}
export default function preset(_, options = {}) {
let { targets = null, reactImportSource = null } = options
const stage = options.stage || `test`
const pluginBabelConfig = loadCachedConfig()
let isBrowser
// unused because of cloud builds
// const absoluteRuntimePath = path.dirname(
// require.resolve(`@babel/runtime/package.json`)
// )
if (!targets) {
if (
stage === `build-html` ||
stage === `develop-html` ||
stage === `test`
) {
targets = {
node: `current`,
}
} else {
isBrowser = true
targets = pluginBabelConfig.browserslist
}
}
if (reactImportSource && options.reactRuntime !== `automatic`) {
throw Error(
`\`@babel/preset-react\` requires reactRuntime \`automatic\` in order to use \`importSource\`.`
)
}
return {
presets: [
[
resolve(`@babel/preset-env`),
{
corejs: 3,
loose: true,
modules: stage === `test` ? `commonjs` : false,
useBuiltIns: `usage`,
targets,
// debug: true,
exclude: [
// Exclude transforms that make all code slower (https://github.com/facebook/create-react-app/pull/5278)
`transform-typeof-symbol`,
// we already have transforms for these
`transform-spread`,
`proposal-nullish-coalescing-operator`,
`proposal-optional-chaining`,
...polyfillsToExclude,
],
},
],
[
resolve(`@babel/preset-react`),
{
useBuiltIns: true,
pragma:
options.reactRuntime === `automatic`
? undefined
: `React.createElement`,
development: stage === `develop`,
runtime: options.reactRuntime || `classic`,
...(reactImportSource && { importSource: reactImportSource }),
},
],
],
plugins: [
[
resolve(`./optimize-hook-destructuring`),
{
lib: true,
},
],
[
resolve(`@babel/plugin-proposal-class-properties`),
{
loose: true,
},
],
[resolve(`@babel/plugin-proposal-nullish-coalescing-operator`)],
[resolve(`@babel/plugin-proposal-optional-chaining`)],
resolve(`babel-plugin-macros`),
resolve(`@babel/plugin-syntax-dynamic-import`),
[
resolve(`@babel/plugin-transform-runtime`),
{
corejs: false,
helpers: true,
regenerator: true,
useESModules: stage !== `test`,
// this breaks cloud builds so we disable it for now
// absoluteRuntime: absoluteRuntimePath,
},
],
// TODO allow loose mode as an option in v3
isBrowser && [
resolve(`@babel/plugin-transform-spread`),
{
loose: false, // Fixes #14848
},
],
isBrowser && [
resolve(`@babel/plugin-transform-classes`),
{
loose: true,
},
],
IS_TEST && resolve(`babel-plugin-dynamic-import-node`),
stage === `build-javascript` && [
// Remove PropTypes from production build
resolve(`babel-plugin-transform-react-remove-prop-types`),
{
removeImport: true,
},
],
].filter(Boolean),
}
}