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rOACCT/node_modules/webpack/lib/config/browserslistTargetHandler.js
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browserslistTargetHandler.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Sergey Melyukov @smelukov
*/
"use strict";
const browserslist = require("browserslist");
const path = require("path");
/** @typedef {import("./target").ApiTargetProperties} ApiTargetProperties */
/** @typedef {import("./target").EcmaTargetProperties} EcmaTargetProperties */
/** @typedef {import("./target").PlatformTargetProperties} PlatformTargetProperties */
// [[C:]/path/to/config][:env]
const inputRx = /^(?:((?:[A-Z]:)?[/\\].*?))?(?::(.+?))?$/i;
/**
* @typedef {Object} BrowserslistHandlerConfig
* @property {string=} configPath
* @property {string=} env
* @property {string=} query
*/
/**
* @param {string} input input string
* @param {string} context the context directory
* @returns {BrowserslistHandlerConfig} config
*/
const parse = (input, context) => {
if (!input) {
return {};
}
if (path.isAbsolute(input)) {
const [, configPath, env] = inputRx.exec(input) || [];
return { configPath, env };
}
const config = browserslist.findConfig(context);
if (config && Object.keys(config).includes(input)) {
return { env: input };
}
return { query: input };
};
/**
* @param {string} input input string
* @param {string} context the context directory
* @returns {string[] | undefined} selected browsers
*/
const load = (input, context) => {
const { configPath, env, query } = parse(input, context);
// if a query is specified, then use it, else
// if a path to a config is specified then load it, else
// find a nearest config
const config = query
? query
: configPath
? browserslist.loadConfig({
config: configPath,
env
})
: browserslist.loadConfig({ path: context, env });
if (!config) return null;
return browserslist(config);
};
/**
* @param {string[]} browsers supported browsers list
* @returns {EcmaTargetProperties & PlatformTargetProperties & ApiTargetProperties} target properties
*/
const resolve = browsers => {
/**
* Checks all against a version number
* @param {Record<string, number | [number, number]>} versions first supported version
* @returns {boolean} true if supports
*/
const rawChecker = versions => {
return browsers.every(v => {
const [name, parsedVersion] = v.split(" ");
if (!name) return false;
const requiredVersion = versions[name];
if (!requiredVersion) return false;
const [parsedMajor, parserMinor] =
// safari TP supports all features for normal safari
parsedVersion === "TP"
? [Infinity, Infinity]
: parsedVersion.split(".");
if (typeof requiredVersion === "number") {
return +parsedMajor >= requiredVersion;
}
return requiredVersion[0] === +parsedMajor
? +parserMinor >= requiredVersion[1]
: +parsedMajor > requiredVersion[0];
});
};
const anyNode = browsers.some(b => /^node /.test(b));
const anyBrowser = browsers.some(b => /^(?!node)/.test(b));
const browserProperty = !anyBrowser ? false : anyNode ? null : true;
const nodeProperty = !anyNode ? false : anyBrowser ? null : true;
// Internet Explorer Mobile, Blackberry browser and Opera Mini are very old browsers, they do not support new features
const es6DynamicImport = rawChecker({
chrome: 63,
and_chr: 63,
edge: 79,
firefox: 67,
and_ff: 67,
// ie: Not supported
opera: 50,
op_mob: 46,
safari: [11, 1],
ios_saf: [11, 3],
samsung: [8, 2],
android: 63,
and_qq: [10, 4],
// baidu: Not supported
// and_uc: Not supported
// kaios: Not supported
// Since Node.js 13.14.0 no warning about usage, but it was added 8.5.0 with some limitations and it was improved in 12.0.0 and 13.2.0
node: [13, 14]
});
return {
const: rawChecker({
chrome: 49,
and_chr: 49,
edge: 12,
// Prior to Firefox 13, <code>const</code> is implemented, but re-assignment is not failing.
// Prior to Firefox 46, a <code>TypeError</code> was thrown on redeclaration instead of a <code>SyntaxError</code>.
firefox: 36,
and_ff: 36,
// Not supported in for-in and for-of loops
// ie: Not supported
opera: 36,
op_mob: 36,
safari: [10, 0],
ios_saf: [10, 0],
// Before 5.0 supported correctly in strict mode, otherwise supported without block scope
samsung: [5, 0],
android: 37,
and_qq: [10, 4],
// Supported correctly in strict mode, otherwise supported without block scope
// baidu: Not supported
and_uc: [12, 12],
kaios: [2, 5],
node: [6, 0]
}),
arrowFunction: rawChecker({
chrome: 45,
and_chr: 45,
edge: 12,
// The initial implementation of arrow functions in Firefox made them automatically strict. This has been changed as of Firefox 24. The use of <code>'use strict';</code> is now required.
// Prior to Firefox 39, a line terminator (<code>\\n</code>) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like <code>() \\n => {}</code> will now throw a <code>SyntaxError</code> in this and later versions.
firefox: 39,
and_ff: 39,
// ie: Not supported,
opera: 32,
op_mob: 32,
safari: 10,
ios_saf: 10,
samsung: [5, 0],
android: 45,
and_qq: [10, 4],
baidu: [7, 12],
and_uc: [12, 12],
kaios: [2, 5],
node: [6, 0]
}),
forOf: rawChecker({
chrome: 38,
and_chr: 38,
edge: 12,
// Prior to Firefox 51, using the for...of loop construct with the const keyword threw a SyntaxError ("missing = in const declaration").
firefox: 51,
and_ff: 51,
// ie: Not supported,
opera: 25,
op_mob: 25,
safari: 7,
ios_saf: 7,
samsung: [3, 0],
android: 38,
// and_qq: Unknown support
// baidu: Unknown support
// and_uc: Unknown support
// kaios: Unknown support
node: [0, 12]
}),
destructuring: rawChecker({
chrome: 49,
and_chr: 49,
edge: 14,
firefox: 41,
and_ff: 41,
// ie: Not supported,
opera: 36,
op_mob: 36,
safari: 8,
ios_saf: 8,
samsung: [5, 0],
android: 49,
// and_qq: Unknown support
// baidu: Unknown support
// and_uc: Unknown support
// kaios: Unknown support
node: [6, 0]
}),
bigIntLiteral: rawChecker({
chrome: 67,
and_chr: 67,
edge: 79,
firefox: 68,
and_ff: 68,
// ie: Not supported,
opera: 54,
op_mob: 48,
safari: 14,
ios_saf: 14,
samsung: [9, 2],
android: 67,
// and_qq: Not supported
// baidu: Not supported
// and_uc: Not supported
// kaios: Not supported
node: [10, 4]
}),
// Support syntax `import` and `export` and no limitations and bugs on Node.js
// Not include `export * as namespace`
module: rawChecker({
chrome: 61,
and_chr: 61,
edge: 16,
firefox: 60,
and_ff: 60,
// ie: Not supported,
opera: 48,
op_mob: 45,
safari: [10, 1],
ios_saf: [10, 3],
samsung: [8, 0],
android: 61,
and_qq: [10, 4],
// baidu: Not supported
// and_uc: Not supported
// kaios: Not supported
// Since Node.js 13.14.0 no warning about usage, but it was added 8.5.0 with some limitations and it was improved in 12.0.0 and 13.2.0
node: [13, 14]
}),
dynamicImport: es6DynamicImport,
dynamicImportInWorker: es6DynamicImport && !anyNode,
// browserslist does not have info about globalThis
// so this is based on mdn-browser-compat-data
globalThis: rawChecker({
chrome: 71,
and_chr: 71,
edge: 79,
firefox: 65,
and_ff: 65,
// ie: Not supported,
opera: 58,
op_mob: 50,
safari: [12, 1],
ios_saf: [12, 2],
samsung: [10, 1],
android: 71,
// and_qq: Unknown support
// baidu: Unknown support
// and_uc: Unknown support
// kaios: Unknown support
node: [12, 0]
}),
browser: browserProperty,
electron: false,
node: nodeProperty,
nwjs: false,
web: browserProperty,
webworker: false,
document: browserProperty,
fetchWasm: browserProperty,
global: nodeProperty,
importScripts: false,
importScriptsInWorker: true,
nodeBuiltins: nodeProperty,
require: nodeProperty
};
};
module.exports = {
resolve,
load
};
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