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86 lines
2.6 KiB
86 lines
2.6 KiB
4 years ago
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.stringifyPath = exports.quoteKey = exports.isValidVariableName = exports.IS_VALID_IDENTIFIER = exports.quoteString = void 0;
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/**
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* Match all characters that need to be escaped in a string. Modified from
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* source to match single quotes instead of double.
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*
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* Source: https://github.com/douglascrockford/JSON-js/blob/master/json2.js
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*/
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const ESCAPABLE = /[\\\'\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
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/**
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* Map of characters to escape characters.
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*/
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const META_CHARS = new Map([
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["\b", "\\b"],
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["\t", "\\t"],
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["\n", "\\n"],
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["\f", "\\f"],
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["\r", "\\r"],
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["'", "\\'"],
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['"', '\\"'],
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["\\", "\\\\"],
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]);
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/**
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* Escape any character into its literal JavaScript string.
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*
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* @param {string} char
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* @return {string}
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*/
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function escapeChar(char) {
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return (META_CHARS.get(char) ||
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`\\u${`0000${char.charCodeAt(0).toString(16)}`.slice(-4)}`);
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}
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/**
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* Quote a string.
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*/
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function quoteString(str) {
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return `'${str.replace(ESCAPABLE, escapeChar)}'`;
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}
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exports.quoteString = quoteString;
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/**
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* JavaScript reserved keywords.
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*/
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const RESERVED_WORDS = new Set(("break else new var case finally return void catch for switch while " +
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"continue function this with default if throw delete in try " +
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"do instanceof typeof abstract enum int short boolean export " +
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"interface static byte extends long super char final native synchronized " +
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"class float package throws const goto private transient debugger " +
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"implements protected volatile double import public let yield").split(" "));
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/**
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* Test for valid JavaScript identifier.
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*/
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exports.IS_VALID_IDENTIFIER = /^[A-Za-z_$][A-Za-z0-9_$]*$/;
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/**
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* Check if a variable name is valid.
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*/
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function isValidVariableName(name) {
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return (typeof name === "string" &&
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!RESERVED_WORDS.has(name) &&
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exports.IS_VALID_IDENTIFIER.test(name));
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}
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exports.isValidVariableName = isValidVariableName;
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/**
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* Quote JavaScript key access.
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*/
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function quoteKey(key, next) {
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return isValidVariableName(key) ? key : next(key);
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}
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exports.quoteKey = quoteKey;
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/**
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* Serialize the path to a string.
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*/
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function stringifyPath(path, next) {
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let result = "";
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for (const key of path) {
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if (isValidVariableName(key)) {
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result += `.${key}`;
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}
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else {
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result += `[${next(key)}]`;
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}
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}
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return result;
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}
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exports.stringifyPath = stringifyPath;
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//# sourceMappingURL=quote.js.map
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