зеркало из https://github.com/mozilla/gecko-dev.git
45 строки
1.1 KiB
JavaScript
45 строки
1.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/**
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* Find Placeholders in the template and save them along with their
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* paths.
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*/
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function findPlaceholders(template, constructor, path = [], placeholders = []) {
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if (!template || typeof template != "object") {
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return placeholders;
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}
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if (template instanceof constructor) {
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placeholders.push({ placeholder: template, path: [...path] });
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return placeholders;
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}
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for (const name in template) {
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path.push(name);
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findPlaceholders(template[name], constructor, path, placeholders);
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path.pop();
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}
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return placeholders;
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}
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exports.findPlaceholders = findPlaceholders;
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/**
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* Get the value at a given path, or undefined if not found.
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*/
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function getPath(obj, path) {
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for (const name of path) {
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if (!(name in obj)) {
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return undefined;
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}
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obj = obj[name];
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}
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return obj;
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}
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exports.getPath = getPath;
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