errors.js

'use strict';
/* istanbul ignore file: https://github.com/nodejs/node/blob/master/lib/internal/errors.js */

const makeError = (Base, key, getMessage) => {
	module.exports[key] = class NodeError extends Base {
		constructor(...args) {
			super(typeof getMessage === 'string' ? getMessage : getMessage(args));
			this.name = `${super.name} [${key}]`;
			this.code = key;
		}
	};
};

makeError(TypeError, 'ERR_INVALID_ARG_TYPE', args => {
	const type = args[0].includes('.') ? 'property' : 'argument';

	let valid = args[1];
	const isManyTypes = Array.isArray(valid);

	if (isManyTypes) {
		valid = `${valid.slice(0, -1).join(', ')} or ${valid.slice(-1)}`;
	}

	return `The "${args[0]}" ${type} must be ${isManyTypes ? 'one of' : 'of'} type ${valid}. Received ${typeof args[2]}`;
});

makeError(TypeError, 'ERR_INVALID_PROTOCOL', args => {
	return `Protocol "${args[0]}" not supported. Expected "${args[1]}"`;
});

makeError(Error, 'ERR_HTTP_HEADERS_SENT', args => {
	return `Cannot ${args[0]} headers after they are sent to the client`;
});

makeError(TypeError, 'ERR_INVALID_HTTP_TOKEN', args => {
	return `${args[0]} must be a valid HTTP token [${args[1]}]`;
});

makeError(TypeError, 'ERR_HTTP_INVALID_HEADER_VALUE', args => {
	return `Invalid value "${args[0]} for header "${args[1]}"`;
});

makeError(TypeError, 'ERR_INVALID_CHAR', args => {
	return `Invalid character in ${args[0]} [${args[1]}]`;
});