You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.7 KiB
73 lines
1.7 KiB
'use strict';
|
|
const browserslist = require('browserslist');
|
|
const { compare, has } = require('./helpers');
|
|
const external = require('./external');
|
|
|
|
const aliases = new Map([
|
|
['and_chr', 'chrome'],
|
|
['and_ff', 'firefox'],
|
|
['ie_mob', 'ie'],
|
|
['ios_saf', 'ios'],
|
|
['op_mob', 'opera_mobile'],
|
|
]);
|
|
|
|
const validTargets = new Set([
|
|
'android',
|
|
'chrome',
|
|
'edge',
|
|
'electron',
|
|
'firefox',
|
|
'ie',
|
|
'ios',
|
|
'node',
|
|
'opera',
|
|
'opera_mobile',
|
|
'phantom',
|
|
'safari',
|
|
'samsung',
|
|
]);
|
|
|
|
module.exports = function (targets) {
|
|
if (typeof targets !== 'object' || Array.isArray(targets)) {
|
|
targets = { browsers: targets };
|
|
}
|
|
|
|
const { browsers, esmodules, node, ...rest } = targets;
|
|
const list = Object.entries(rest);
|
|
|
|
if (browsers) {
|
|
list.push(...browserslist(browsers).map(it => it.split(' ')));
|
|
}
|
|
if (esmodules) {
|
|
list.push(...Object.entries(external.modules));
|
|
}
|
|
if (node) {
|
|
list.push(['node', node === 'current' ? process.versions.node : node]);
|
|
}
|
|
|
|
const normalized = list.map(([engine, version]) => {
|
|
if (has(browserslist.aliases, engine)) {
|
|
engine = browserslist.aliases[engine];
|
|
}
|
|
if (aliases.has(engine)) {
|
|
engine = aliases.get(engine);
|
|
} else if (engine === 'android' && compare(version, '>', '4.4.4')) {
|
|
engine = 'chrome';
|
|
}
|
|
return [engine, String(version)];
|
|
}).filter(([engine]) => {
|
|
return validTargets.has(engine);
|
|
}).sort(([a], [b]) => {
|
|
return a < b ? -1 : a > b ? 1 : 0;
|
|
});
|
|
|
|
const reducedByMinVersion = new Map();
|
|
for (const [engine, version] of normalized) {
|
|
if (!reducedByMinVersion.has(engine) || compare(version, '<=', reducedByMinVersion.get(engine))) {
|
|
reducedByMinVersion.set(engine, version);
|
|
}
|
|
}
|
|
|
|
return reducedByMinVersion;
|
|
};
|