@stryke/json/dist/utils/parse.cjs

A package containing JSON parsing/stringify utilities used by Storm Software.

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
const require_utils_strip_comments = require('./strip-comments.cjs');

//#region src/utils/parse.ts
const suspectProtoRx = /"(?:_|\\u0{2}5[Ff]){2}(?:p|\\u0{2}70)(?:r|\\u0{2}72)(?:o|\\u0{2}6[Ff])(?:t|\\u0{2}74)(?:o|\\u0{2}6[Ff])(?:_|\\u0{2}5[Ff]){2}"\s*:/;
const suspectConstructorRx = /"(?:c|\\u0063)(?:o|\\u006[Ff])(?:n|\\u006[Ee])(?:s|\\u0073)(?:t|\\u0074)(?:r|\\u0072)(?:u|\\u0075)(?:c|\\u0063)(?:t|\\u0074)(?:o|\\u006[Ff])(?:r|\\u0072)"\s*:/;
const JsonSigRx = /^\s*["[{]|^\s*-?\d{1,16}(?:\.\d{1,17})?(?:E[+-]?\d+)?\s*$/i;
function jsonParseTransform(key, value) {
	if (key === "__proto__" || key === "constructor" && value && typeof value === "object" && "prototype" in value) {
		console.warn(`Dropping "${key}" key to prevent prototype pollution.`);
		return;
	}
	return value;
}
function parse(value, options = {}) {
	if (typeof value !== "string") return value;
	let stripped = require_utils_strip_comments.stripComments(value);
	if (stripped[0] === "\"" && stripped[stripped.length - 1] === "\"" && !stripped.includes("\\")) return stripped.slice(1, -1);
	stripped = stripped.trim();
	if (stripped.length <= 9) switch (stripped.toLowerCase()) {
		case "true": return true;
		case "false": return false;
		case "undefined": return;
		case "null": return null;
		case "nan": return NaN;
		case "infinity": return Number.POSITIVE_INFINITY;
		case "-infinity": return Number.NEGATIVE_INFINITY;
	}
	if (!JsonSigRx.test(stripped)) {
		if (options.strict) throw new Error("Invalid JSON");
		return stripped;
	}
	try {
		if (suspectProtoRx.test(stripped) || suspectConstructorRx.test(stripped)) {
			if (options.strict) throw new Error("Possible prototype pollution");
			return JSON.parse(stripped, jsonParseTransform);
		}
		return JSON.parse(stripped);
	} catch (error) {
		if (options.strict) throw error;
		return value;
	}
}
function safeParse(value, options = {}) {
	return parse(value, {
		...options,
		strict: true
	});
}

//#endregion
exports.parse = parse;
exports.safeParse = safeParse;