62 lines
1.3 KiB
JavaScript
62 lines
1.3 KiB
JavaScript
import path from "path";
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import fs from "fs";
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import { sync as mkdirpSync } from "mkdirp";
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import homeOrTmp from "home-or-tmp";
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import * as babel from "babel-core";
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import findCacheDir from "find-cache-dir";
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const DEFAULT_CACHE_DIR = findCacheDir({ name: "babel-register" }) || homeOrTmp;
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const DEFAULT_FILENAME = path.join(DEFAULT_CACHE_DIR, `.babel.${babel.version}.${babel.getEnv()}.json`);
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const FILENAME: string = process.env.BABEL_CACHE_PATH || DEFAULT_FILENAME;
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let data: Object = {};
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/**
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* Write stringified cache to disk.
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*/
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export function save() {
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let serialised: string = "{}";
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try {
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serialised = JSON.stringify(data, null, " ");
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} catch (err) {
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if (err.message === "Invalid string length") {
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err.message = "Cache too large so it's been cleared.";
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console.error(err.stack);
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} else {
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throw err;
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}
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}
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mkdirpSync(path.dirname(FILENAME));
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fs.writeFileSync(FILENAME, serialised);
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}
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/**
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* Load cache from disk and parse.
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*/
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export function load() {
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if (process.env.BABEL_DISABLE_CACHE) return;
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process.on("exit", save);
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process.nextTick(save);
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if (!fs.existsSync(FILENAME)) return;
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try {
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data = JSON.parse(fs.readFileSync(FILENAME));
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} catch (err) {
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return;
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}
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}
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/**
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* Retrieve data from cache.
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*/
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export function get(): Object {
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return data;
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}
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