typia/lib/TypeGuardError.mjs

Superfast runtime validators with only one line

//#region src/TypeGuardError.ts
/**
* Error thrown when type assertion fails.
*
* Thrown by {@link assert}, {@link assertGuard}, and other assert-family
* functions when input doesn't match expected type `T`. Contains detailed
* information about the first assertion failure:
*
* - `method`: Which typia function threw (e.g., `"typia.assert"`)
* - `path`: Property path where error occurred (e.g., `"input.user.age"`)
* - `expected`: Expected type string (e.g., `"number & ExclusiveMinimum<19>"`)
* - `value`: Actual value that failed validation
*
* @template T Expected type (for type safety)
*/
var TypeGuardError = class extends Error {
	/**
	* Creates a new TypeGuardError instance.
	*
	* @param props Error properties
	*/
	constructor(props) {
		super(props.message || `Error on ${props.method}(): invalid type${props.path ? ` on ${props.path}` : ""}, expect to be ${props.expected}`);
		const proto = new.target.prototype;
		if (Object.setPrototypeOf) Object.setPrototypeOf(this, proto);
		else this.__proto__ = proto;
		this.name = "TypeGuardError";
		this.method = props.method;
		this.path = props.path;
		this.expected = props.expected;
		this.value = props.value;
		if (props.description || props.value === void 0) this.description = props.description ?? [
			"The value at this path is `undefined`.",
			"",
			`Please fill the \`${props.expected}\` typed value next time.`
		].join("\n");
	}
};
//#endregion
export { TypeGuardError };

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