init

node_modules/core-js-compat/targets-parser.js

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+'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',
+  'deno',
+  'edge',
+  'electron',
+  'firefox',
+  'ie',
+  'ios',
+  'node',
+  'opera',
+  'opera_mobile',
+  'phantom',
+  'rhino',
+  '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) {
+    if (typeof browsers === 'string' || Array.isArray(browsers)) {
+      list.push(...browserslist(browsers).map(it => it.split(' ')));
+    } else {
+      list.push(...Object.entries(browsers));
+    }
+  }
+  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);
+    }
+    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;
+};