77a6d686ba
Use the data from https://github.com/kangax/compat-table to build the browser data. Each Babel plugin is mapped to a list of features in the compatibility table (in `data/pluginFeatures.js`), and the minimum supporting version looked up from the compatibility test data. The script builds the final browser data file in `data/plugins.json`.
78 lines
2.0 KiB
JavaScript
78 lines
2.0 KiB
JavaScript
const fs = require("fs");
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const path = require("path");
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const flatten = require("lodash/flatten");
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const flattenDeep = require("lodash/flattenDeep");
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const naturalCompare = require("natural-compare");
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const pluginFeatures = require("../data/pluginFeatures");
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const renameTests = (tests, getName) =>
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tests.map((test) => Object.assign({}, test, { name: getName(test.name) }));
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const compatibilityTests = flattenDeep([
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require("compat-table/data-es6"),
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require("compat-table/data-es2016plus"),
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].map((data) =>
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data.tests.map((test) => {
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return test.subtests ?
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[test, renameTests(test.subtests, (name) => test.name + " / " + name)] :
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test;
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})
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));
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const versions = Object.keys(require("compat-table/data-es6").browsers)
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.sort(naturalCompare);
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const environments = [
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"chrome",
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"edge",
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"firefox",
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"safari",
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];
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const getLowestImplementedVersion = ({ features }, env) => {
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let tests = flatten(compatibilityTests
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.filter((test) => features.indexOf(test.name) >= 0)
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.map((test) => {
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return test.subtests ?
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test.subtests.map((subtest) => subtest.res) :
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test.res;
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})
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);
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const envVersions = versions.filter((version) => version.startsWith(env));
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for (let i = 0; i < envVersions.length; i++) {
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const version = envVersions[i];
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tests = tests.filter((test) =>
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test[version] !== true &&
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test[version] !== "strict"
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);
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if (tests.length === 0) {
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const number = parseInt(version.replace(env, ""), 10);
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return isFinite(number) ? number : null;
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}
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}
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return null;
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};
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const data = {};
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for (const pluginName in pluginFeatures) {
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const options = pluginFeatures[pluginName];
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const plugin = {};
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environments.forEach((env) => {
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if (Array.isArray(options.features)) {
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const version = getLowestImplementedVersion(options, env);
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if (version !== null) {
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plugin[env] = version;
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}
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}
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});
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data[pluginName] = plugin;
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}
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fs.writeFileSync(
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path.join(__dirname, "../data/plugins.json"),
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JSON.stringify(data, null, 2) + "\n"
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);
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