mirror of https://github.com/webpack/webpack.git
58 lines
1.2 KiB
JavaScript
58 lines
1.2 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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*/
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"use strict";
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class Serializer {
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constructor(middlewares, options = {}) {
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this.middlewares = middlewares;
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this.options = options;
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}
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serializeToFile(obj, filename) {
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const context = {
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filename
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};
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return new Promise((resolve, reject) =>
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resolve(
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this.middlewares.reduce((last, middleware) => {
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if (last instanceof Promise) {
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return last.then(data => middleware.serialize(data, context));
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} else {
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try {
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return middleware.serialize(last, context);
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} catch (err) {
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return Promise.resolve().then(() => {
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throw err;
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});
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}
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}
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}, this.options.singleItem ? [obj] : obj)
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)
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);
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}
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deserializeFromFile(filename) {
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const context = {
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filename
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};
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return Promise.resolve()
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.then(() =>
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this.middlewares
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.slice()
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.reverse()
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.reduce((last, middleware) => {
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if (last instanceof Promise)
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return last.then(data => middleware.deserialize(data, context));
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else return middleware.deserialize(last, context);
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}, [])
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)
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.then(array => {
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return this.options.singleItem ? array[0] : array;
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});
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}
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}
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module.exports = Serializer;
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