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59 lines
1.7 KiB
59 lines
1.7 KiB
"use strict";
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const { ParserError } = require("../util/errors");
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const yaml = require("js-yaml");
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module.exports = {
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/**
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* The order that this parser will run, in relation to other parsers.
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*
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* @type {number}
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*/
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order: 200,
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/**
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* Whether to allow "empty" files. This includes zero-byte files, as well as empty JSON objects.
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*
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* @type {boolean}
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*/
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allowEmpty: true,
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/**
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* Determines whether this parser can parse a given file reference.
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* Parsers that match will be tried, in order, until one successfully parses the file.
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* Parsers that don't match will be skipped, UNLESS none of the parsers match, in which case
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* every parser will be tried.
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*
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* @type {RegExp|string[]|function}
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*/
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canParse: [".yaml", ".yml", ".json"], // JSON is valid YAML
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/**
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* Parses the given file as YAML
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*
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* @param {object} file - An object containing information about the referenced file
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* @param {string} file.url - The full URL of the referenced file
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* @param {string} file.extension - The lowercased file extension (e.g. ".txt", ".html", etc.)
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* @param {*} file.data - The file contents. This will be whatever data type was returned by the resolver
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* @returns {Promise}
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*/
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async parse (file) { // eslint-disable-line require-await
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let data = file.data;
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if (Buffer.isBuffer(data)) {
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data = data.toString();
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}
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if (typeof data === "string") {
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try {
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return yaml.load(data);
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}
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catch (e) {
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throw new ParserError(e.message, file.url);
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}
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}
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else {
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// data is already a JavaScript value (object, array, number, null, NaN, etc.)
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return data;
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}
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}
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};
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