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'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
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})?([Ee][+-]?\d+)?\s*$/;
function jsonParseTransform(key, value) {
if (key === "__proto__" || key === "constructor" && value && typeof value === "object" && "prototype" in value) {
warnKeyDropped(key);
return;
}
return value;
}
function warnKeyDropped(key) {
console.warn(`[destr] Dropping "${key}" key to prevent prototype pollution.`);
}
function destr(value, options = {}) {
if (typeof value !== "string") {
return value;
}
if (value[0] === '"' && value[value.length - 1] === '"' && value.indexOf("\\") === -1) {
return value.slice(1, -1);
}
const _value = value.trim();
if (_value.length <= 9) {
switch (_value.toLowerCase()) {
case "true": {
return true;
}
case "false": {
return false;
}
case "undefined": {
return void 0;
}
case "null": {
return null;
}
case "nan": {
return Number.NaN;
}
case "infinity": {
return Number.POSITIVE_INFINITY;
}
case "-infinity": {
return Number.NEGATIVE_INFINITY;
}
}
}
if (!JsonSigRx.test(value)) {
if (options.strict) {
throw new SyntaxError("[destr] Invalid JSON");
}
return value;
}
try {
if (suspectProtoRx.test(value) || suspectConstructorRx.test(value)) {
if (options.strict) {
throw new Error("[destr] Possible prototype pollution");
}
return JSON.parse(value, jsonParseTransform);
}
return JSON.parse(value);
} catch (error) {
if (options.strict) {
throw error;
}
return value;
}
}
function safeDestr(value, options = {}) {
return destr(value, { ...options, strict: true });
}
exports.default = destr;
exports.destr = destr;
exports.safeDestr = safeDestr;