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56 lines
1.5 KiB
56 lines
1.5 KiB
2 years ago
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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*:/;
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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*:/;
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const JsonSigRx = /^\s*["[{]|^\s*-?\d[\d.]{0,14}\s*$/;
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function jsonParseTransform(key, value) {
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if (key === "__proto__") {
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return;
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}
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if (key === "constructor" && value && typeof value === "object" && "prototype" in value) {
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return;
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}
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return value;
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}
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function destr(value, options = {}) {
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if (typeof value !== "string") {
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return value;
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}
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const _lval = value.toLowerCase().trim();
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if (_lval === "true") {
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return true;
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}
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if (_lval === "false") {
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return false;
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}
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if (_lval === "null") {
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return null;
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}
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if (_lval === "nan") {
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return Number.NaN;
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}
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if (_lval === "infinity") {
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return Number.POSITIVE_INFINITY;
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}
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if (_lval === "undefined") {
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return void 0;
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}
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if (!JsonSigRx.test(value)) {
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if (options.strict) {
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throw new SyntaxError("Invalid JSON");
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}
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return value;
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}
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try {
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if (suspectProtoRx.test(value) || suspectConstructorRx.test(value)) {
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return JSON.parse(value, jsonParseTransform);
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}
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return JSON.parse(value);
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} catch (error) {
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if (options.strict) {
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throw error;
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}
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return value;
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}
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}
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export { destr as default };
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