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A Babel preset for each environment.
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
exports.isPluginRequired = isPluginRequired;
exports.transformIncludesAndExcludes = void 0;
var _semver = require("semver");
var _debug = require("./debug.js");
var _filterItems = require("./filter-items.js");
var _moduleTransformations = require("./module-transformations.js");
var _normalizeOptions = require("./normalize-options.js");
var _shippedProposals = require("./shipped-proposals.js");
var _pluginsCompatData = require("./plugins-compat-data.js");
var _babelPluginPolyfillCorejs = require("babel-plugin-polyfill-corejs3");
var _babel7Plugins = require("./polyfills/babel-7-plugins.cjs");
var _helperCompilationTargets = require("@babel/helper-compilation-targets");
var _availablePlugins = require("./available-plugins.js");
var _helperPluginUtils = require("@babel/helper-plugin-utils");
const pluginCoreJS3 = _babelPluginPolyfillCorejs.default || _babelPluginPolyfillCorejs;
function isPluginRequired(targets, support) {
return (0, _helperCompilationTargets.isRequired)("fake-name", targets, {
compatData: {
"fake-name": support
}
});
}
function filterStageFromList(list, stageList) {
return Object.keys(list).reduce((result, item) => {
if (!stageList.has(item)) {
result[item] = list[item];
}
return result;
}, {});
}
const pluginLists = {
withProposals: {
withoutBugfixes: _pluginsCompatData.plugins,
withBugfixes: Object.assign({}, _pluginsCompatData.plugins, _pluginsCompatData.pluginsBugfixes)
},
withoutProposals: {
withoutBugfixes: filterStageFromList(_pluginsCompatData.plugins, _shippedProposals.proposalPlugins),
withBugfixes: filterStageFromList(Object.assign({}, _pluginsCompatData.plugins, _pluginsCompatData.pluginsBugfixes), _shippedProposals.proposalPlugins)
}
};
function getPluginList(proposals, bugfixes) {
if (proposals) {
if (bugfixes) return pluginLists.withProposals.withBugfixes;else return pluginLists.withProposals.withoutBugfixes;
} else {
if (bugfixes) return pluginLists.withoutProposals.withBugfixes;else return pluginLists.withoutProposals.withoutBugfixes;
}
}
const getPlugin = pluginName => {
const plugin = _availablePlugins.default[pluginName]();
if (!plugin) {
throw new Error(`Could not find plugin "${pluginName}". Ensure there is an entry in ./available-plugins.js for it.`);
}
return plugin;
};
const transformIncludesAndExcludes = opts => {
return opts.reduce((result, opt) => {
const target = /^(?:es|es6|es7|esnext|web)\./.test(opt) ? "builtIns" : "plugins";
result[target].add(opt);
return result;
}, {
all: opts,
plugins: new Set(),
builtIns: new Set()
});
};
exports.transformIncludesAndExcludes = transformIncludesAndExcludes;
function getSpecialModulesPluginNames(modules, shouldTransformDynamicImport, babelVersion) {
const modulesPluginNames = [];
if (modules) {
modulesPluginNames.push(_moduleTransformations.default[modules]);
}
if (shouldTransformDynamicImport) {
if (modules && modules !== "umd") {
modulesPluginNames.push("transform-dynamic-import");
} else {
console.warn("Dynamic import can only be transformed when transforming ES" + " modules to AMD, CommonJS or SystemJS.");
}
}
if (babelVersion[0] !== "8") {
if (!shouldTransformDynamicImport) {
modulesPluginNames.push("syntax-dynamic-import");
}
modulesPluginNames.push("syntax-top-level-await");
modulesPluginNames.push("syntax-import-meta");
}
return modulesPluginNames;
}
const getCoreJSOptions = ({
useBuiltIns,
corejs,
polyfillTargets,
include,
exclude,
proposals,
shippedProposals,
debug
}) => ({
method: `${useBuiltIns}-global`,
version: corejs ? corejs.toString() : undefined,
targets: polyfillTargets,
include,
exclude,
proposals,
shippedProposals,
debug,
"#__secret_key__@babel/preset-env__compatibility": {
noRuntimeName: true
}
});
{
var getPolyfillPlugins = ({
useBuiltIns,
corejs,
polyfillTargets,
include,
exclude,
proposals,
shippedProposals,
regenerator,
debug
}) => {
const polyfillPlugins = [];
if (useBuiltIns === "usage" || useBuiltIns === "entry") {
const pluginOptions = getCoreJSOptions({
useBuiltIns,
corejs,
polyfillTargets,
include,
exclude,
proposals,
shippedProposals,
debug
});
if (corejs) {
{
if (useBuiltIns === "usage") {
if (corejs.major === 2) {
polyfillPlugins.push([_babel7Plugins.pluginCoreJS2, pluginOptions], [_babel7Plugins.legacyBabelPolyfillPlugin, {
usage: true
}]);
} else {
polyfillPlugins.push([pluginCoreJS3, pluginOptions], [_babel7Plugins.legacyBabelPolyfillPlugin, {
usage: true,
deprecated: true
}]);
}
if (regenerator) {
polyfillPlugins.push([_babel7Plugins.pluginRegenerator, {
method: "usage-global",
debug
}]);
}
} else {
if (corejs.major === 2) {
polyfillPlugins.push([_babel7Plugins.legacyBabelPolyfillPlugin, {
regenerator
}], [_babel7Plugins.pluginCoreJS2, pluginOptions]);
} else {
polyfillPlugins.push([pluginCoreJS3, pluginOptions], [_babel7Plugins.legacyBabelPolyfillPlugin, {
deprecated: true
}]);
if (!regenerator) {
polyfillPlugins.push([_babel7Plugins.removeRegeneratorEntryPlugin, pluginOptions]);
}
}
}
}
}
}
return polyfillPlugins;
};
{
exports.getPolyfillPlugins = getPolyfillPlugins;
}
}
function getLocalTargets(optionsTargets, ignoreBrowserslistConfig, configPath, browserslistEnv) {
if (optionsTargets != null && optionsTargets.esmodules && optionsTargets.browsers) {
console.warn(`
@babel/preset-env: esmodules and browsers targets have been specified together.
\`browsers\` target, \`${optionsTargets.browsers.toString()}\` will be ignored.
`);
}
return (0, _helperCompilationTargets.default)(optionsTargets, {
ignoreBrowserslistConfig,
configPath,
browserslistEnv
});
}
function supportsStaticESM(caller) {
return !!(caller != null && caller.supportsStaticESM);
}
function supportsDynamicImport(caller) {
return !!(caller != null && caller.supportsDynamicImport);
}
function supportsExportNamespaceFrom(caller) {
return !!(caller != null && caller.supportsExportNamespaceFrom);
}
var _default = exports.default = (0, _helperPluginUtils.declarePreset)((api, opts) => {
api.assertVersion(7);
const babelTargets = api.targets();
;
const {
bugfixes,
configPath,
debug,
exclude: optionsExclude,
forceAllTransforms,
ignoreBrowserslistConfig,
include: optionsInclude,
modules: optionsModules,
shippedProposals,
targets: optionsTargets,
useBuiltIns,
corejs: {
version: corejs,
proposals
},
browserslistEnv
} = (0, _normalizeOptions.default)(opts);
{
var {
loose,
spec = false
} = opts;
}
let targets = babelTargets;
if (_semver.lt(api.version, "7.13.0") || opts.targets || opts.configPath || opts.browserslistEnv || opts.ignoreBrowserslistConfig) {
{
var hasUglifyTarget = false;
if (optionsTargets != null && optionsTargets.uglify) {
hasUglifyTarget = true;
delete optionsTargets.uglify;
console.warn(`
The uglify target has been deprecated. Set the top level
option \`forceAllTransforms: true\` instead.
`);
}
}
targets = getLocalTargets(optionsTargets, ignoreBrowserslistConfig, configPath, browserslistEnv);
}
const transformTargets = forceAllTransforms || hasUglifyTarget ? {} : targets;
const include = transformIncludesAndExcludes(optionsInclude);
const exclude = transformIncludesAndExcludes(optionsExclude);
const compatData = getPluginList(shippedProposals, bugfixes);
const modules = optionsModules === "auto" ? api.caller(supportsStaticESM) ? false : "commonjs" : optionsModules;
const shouldTransformDynamicImport = optionsModules === "auto" ? !api.caller(supportsDynamicImport) : !!modules;
if (!exclude.plugins.has("transform-export-namespace-from") && (optionsModules === "auto" ? !api.caller(supportsExportNamespaceFrom) : !!modules)) {
include.plugins.add("transform-export-namespace-from");
}
const pluginNames = (0, _helperCompilationTargets.filterItems)(compatData, include.plugins, exclude.plugins, transformTargets, getSpecialModulesPluginNames(modules, shouldTransformDynamicImport, api.version), !loose ? undefined : ["transform-typeof-symbol"], _shippedProposals.pluginSyntaxMap);
if (shippedProposals) {
(0, _filterItems.addProposalSyntaxPlugins)(pluginNames, _shippedProposals.proposalSyntaxPlugins);
}
(0, _filterItems.removeUnsupportedItems)(pluginNames, api.version);
(0, _filterItems.removeUnnecessaryItems)(pluginNames, _pluginsCompatData.overlappingPlugins);
const polyfillPlugins = getPolyfillPlugins({
useBuiltIns,
corejs,
polyfillTargets: targets,
include: include.builtIns,
exclude: exclude.builtIns,
proposals,
shippedProposals,
regenerator: pluginNames.has("transform-regenerator"),
debug
});
const pluginUseBuiltIns = useBuiltIns !== false;
const plugins = Array.from(pluginNames).map(pluginName => {
if (pluginName === "transform-class-properties" || pluginName === "transform-private-methods" || pluginName === "transform-private-property-in-object") {
return [getPlugin(pluginName), {
loose: loose ? "#__internal__@babel/preset-env__prefer-true-but-false-is-ok-if-it-prevents-an-error" : "#__internal__@babel/preset-env__prefer-false-but-true-is-ok-if-it-prevents-an-error"
}];
}
if (pluginName === "syntax-import-attributes") {
return [getPlugin(pluginName), {
deprecatedAssertSyntax: true
}];
}
return [getPlugin(pluginName), {
spec,
loose,
useBuiltIns: pluginUseBuiltIns
}];
}).concat(polyfillPlugins);
if (debug) {
console.log("@babel/preset-env: `DEBUG` option");
console.log("\nUsing targets:");
console.log(JSON.stringify((0, _helperCompilationTargets.prettifyTargets)(targets), null, 2));
console.log(`\nUsing modules transform: ${optionsModules.toString()}`);
console.log("\nUsing plugins:");
pluginNames.forEach(pluginName => {
(0, _debug.logPlugin)(pluginName, targets, compatData);
});
if (!useBuiltIns) {
console.log("\nUsing polyfills: No polyfills were added, since the `useBuiltIns` option was not set.");
}
}
return {
plugins
};
});
{
exports.getModulesPluginNames = ({
modules,
transformations,
shouldTransformESM,
shouldTransformDynamicImport,
shouldTransformExportNamespaceFrom
}) => {
const modulesPluginNames = [];
if (modules !== false && transformations[modules]) {
if (shouldTransformESM) {
modulesPluginNames.push(transformations[modules]);
}
if (shouldTransformDynamicImport) {
if (shouldTransformESM && modules !== "umd") {
modulesPluginNames.push("transform-dynamic-import");
} else {
console.warn("Dynamic import can only be transformed when transforming ES" + " modules to AMD, CommonJS or SystemJS.");
}
}
}
if (shouldTransformExportNamespaceFrom) {
modulesPluginNames.push("transform-export-namespace-from");
}
if (!shouldTransformDynamicImport) {
modulesPluginNames.push("syntax-dynamic-import");
}
if (!shouldTransformExportNamespaceFrom) {
modulesPluginNames.push("syntax-export-namespace-from");
}
modulesPluginNames.push("syntax-top-level-await");
modulesPluginNames.push("syntax-import-meta");
return modulesPluginNames;
};
}
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