75 lines
2.9 KiB
JavaScript
75 lines
2.9 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.enginesToBabelTargets = enginesToBabelTargets;
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function _assert() {
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const data = _interopRequireDefault(require("assert"));
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_assert = function () {
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return data;
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};
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return data;
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}
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function _semver() {
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const data = _interopRequireDefault(require("semver"));
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_semver = function () {
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return data;
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};
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return data;
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}
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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// Copied from @babel/helper-compilation-targets/lib/options.js
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const TargetNames = {
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node: 'node',
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chrome: 'chrome',
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opera: 'opera',
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edge: 'edge',
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firefox: 'firefox',
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safari: 'safari',
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ie: 'ie',
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ios: 'ios',
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android: 'android',
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electron: 'electron',
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samsung: 'samsung',
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rhino: 'rhino'
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};
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// List of browsers to exclude when the esmodule target is specified.
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// Based on https://caniuse.com/#feat=es6-module
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const ESMODULE_BROWSERS = ['not ie <= 11', 'not edge < 16', 'not firefox < 60', 'not chrome < 61', 'not safari < 11', 'not opera < 48', 'not ios_saf < 11', 'not op_mini all', 'not android < 76', 'not blackberry > 0', 'not op_mob > 0', 'not and_chr < 76', 'not and_ff < 68', 'not ie_mob > 0', 'not and_uc > 0', 'not samsung < 8.2', 'not and_qq > 0', 'not baidu > 0', 'not kaios > 0'];
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function enginesToBabelTargets(env) {
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// "Targets" is the name @babel/preset-env uses for what Parcel calls engines.
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// This should not be confused with Parcel's own targets.
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// Unlike Parcel's engines, @babel/preset-env expects to work with minimum
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// versions, not semver ranges, of its targets.
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let targets = {};
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for (let engineName of Object.keys(env.engines)) {
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let engineValue = env.engines[engineName];
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// if the engineValue is a string, it might be a semver range. Use the minimum
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// possible version instead.
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if (engineName === 'browsers') {
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targets[engineName] = engineValue;
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} else {
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var _semver$minVersion;
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(0, _assert().default)(typeof engineValue === 'string');
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if (!TargetNames.hasOwnProperty(engineName)) continue;
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let minVersion = (_semver$minVersion = _semver().default.minVersion(engineValue)) === null || _semver$minVersion === void 0 ? void 0 : _semver$minVersion.toString();
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targets[engineName] = minVersion !== null && minVersion !== void 0 ? minVersion : engineValue;
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}
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}
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if (env.outputFormat === 'esmodule' && env.isBrowser()) {
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// If there is already a browsers target, add a blacklist to exclude
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// instead of using babel's esmodules target. This allows specifying
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// a newer set of browsers than the baseline esmodule support list.
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// See https://github.com/babel/babel/issues/8809.
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if (targets.browsers) {
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let browsers = Array.isArray(targets.browsers) ? targets.browsers : [targets.browsers];
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targets.browsers = [...browsers, ...ESMODULE_BROWSERS];
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} else {
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targets.esmodules = true;
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}
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}
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return targets;
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} |