error-to-json
Version:
Returns a JSON representation of an error (handles nested errors and calls nested toJSONs)
56 lines • 1.84 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.parse = void 0;
const fast_safe_stringify_1 = __importDefault(require("fast-safe-stringify"));
exports.default = errToJSON;
const nonEnumerablePropsToCopy = ['code', 'errno', 'syscall'];
function errToJSON(err) {
let json;
// @ts-ignore
if (typeof err.toJSON === 'function') {
// @ts-ignore
json = err.toJSON();
}
else {
// stub error tojson
const stubbed = 'toJSON' in Error.prototype;
// @ts-ignore
const toJSON = Error.prototype.toJSON;
// @ts-ignore
Error.prototype.toJSON = function () {
const json = Object.assign(Object.assign({}, this), {
// normal props
name: this.name, message: this.message, stack: this.stack });
nonEnumerablePropsToCopy.forEach((key) => {
// @ts-ignore
if (key in this)
json[key] = this[key];
});
return JSON.parse(fast_safe_stringify_1.default(json));
};
// get error json
// @ts-ignore
json = err.toJSON();
// unstub error tojson
// @ts-ignore
if (stubbed)
Error.prototype.toJSON = toJSON;
}
// return error json
return json;
}
function parse(json) {
const err = new Error(json.message);
const stack = err.stack || '';
Object.assign(err, json);
if (err.stack === stack) {
// remove stacktrace generated by error constructor above
err.stack = stack.slice(0, stack.indexOf('\n'));
}
return err;
}
exports.parse = parse;
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