71 lines
2.0 KiB
JavaScript
71 lines
2.0 KiB
JavaScript
const path = require("path");
|
|
const fs = require("fs");
|
|
const request = require("request");
|
|
|
|
// This mapping represents browsers who have shipped ES Modules Support.
|
|
// For more information, checkout the specifications:
|
|
// * https://www.ecma-international.org/ecma-262/6.0/#sec-modules
|
|
// * https://html.spec.whatwg.org/multipage/scripting.html#attr-script-type
|
|
const lastKnown = {
|
|
chrome: 61,
|
|
firefox: 59,
|
|
safari: 10.1,
|
|
ios_saf: 10.3,
|
|
edge: 16,
|
|
};
|
|
|
|
function input() {
|
|
return new Promise(function(resolve, reject) {
|
|
request(
|
|
"https://raw.githubusercontent.com/Fyrd/caniuse/master/features-json/es6-module.json",
|
|
function(error, response, body) {
|
|
if (error || response.statusCode !== 200) {
|
|
return reject(
|
|
new Error(
|
|
`Error retrieving es6-module.json. ${
|
|
error ? error : `statusCode=${response.statusCode}`
|
|
}`
|
|
)
|
|
);
|
|
}
|
|
|
|
try {
|
|
const { stats } = JSON.parse(body);
|
|
const allowedBrowsers = {};
|
|
|
|
Object.keys(stats).forEach(browser => {
|
|
if (browser !== "and_chr") {
|
|
const browserVersions = stats[browser];
|
|
const allowedVersions = Object.keys(browserVersions)
|
|
.filter(value => {
|
|
return browserVersions[value] === "y";
|
|
})
|
|
.sort((a, b) => a - b);
|
|
|
|
if (allowedVersions[0] !== undefined) {
|
|
allowedBrowsers[browser] = allowedVersions[0];
|
|
}
|
|
}
|
|
});
|
|
|
|
resolve(allowedBrowsers);
|
|
} catch (error) {
|
|
return reject(new Error(`Error parsing es6-module.json.`));
|
|
}
|
|
}
|
|
);
|
|
});
|
|
}
|
|
|
|
function output(minVersions) {
|
|
const dataPath = path.join(__dirname, "../data/built-in-modules.json");
|
|
const data = {
|
|
"es6.module": minVersions,
|
|
};
|
|
fs.writeFileSync(dataPath, `${JSON.stringify(data, null, 2)}\n`);
|
|
}
|
|
|
|
Promise.resolve(input())
|
|
.then(minVersions => output(minVersions))
|
|
.catch(output(lastKnown));
|