47 lines
1.6 KiB
TypeScript
47 lines
1.6 KiB
TypeScript
define("values/errors", () => {
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var Error = env.global.Error = function Error(msg: string) {
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if (msg === undefined) msg = '';
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else msg += '';
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return {
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message: msg,
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stack: [] as string[],
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__proto__: Error.prototype,
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} as any;
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} as ErrorConstructor;
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setConstr(Error.prototype, Error);
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setProps(Error.prototype, {
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name: 'Error',
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toString: internals.setEnv(function(this: Error) {
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if (!(this instanceof Error)) return '';
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if (this.message === '') return this.name;
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else return this.name + ': ' + this.message;
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}, env)
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});
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env.setProto('error', Error.prototype);
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internals.markSpecial(Error);
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function makeError<T1 extends ErrorConstructor>(name: string, proto: string): T1 {
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function constr (msg: string) {
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var res = new Error(msg);
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(res as any).__proto__ = constr.prototype;
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return res;
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}
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(constr as any).__proto__ = Error;
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(constr.prototype as any).__proto__ = env.proto('error');
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setConstr(constr.prototype, constr as ErrorConstructor);
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setProps(constr.prototype, { name: name });
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internals.markSpecial(constr);
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env.setProto(proto, constr.prototype);
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return constr as T1;
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}
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env.global.RangeError = makeError('RangeError', 'rangeErr');
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env.global.TypeError = makeError('TypeError', 'typeErr');
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env.global.SyntaxError = makeError('SyntaxError', 'syntaxErr');
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}); |