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make-error

> Make your own error types!

# Features

- Compatible Node & browsers
- `instanceof` support
- `error.name` & `error.stack` support
- compatible with CSP (i.e. no `eval()`)

# Installation

## Node & <a href="http://browserify.org/">Browserify</a>/<a href="https://webpack.js.org/">Webpack</a>

Installation of the npm package:

> npm install --save make-error

Then require the package:

var makeError = require("make-error");

## Browser

You can directly use the build provided at unpkg.com:

<script src="https://unpkg.com/make-error@1/dist/make-error.js"></script>

# Usage

## Basic named error

var CustomError = makeError("CustomError");
// Parameters are forwarded to the super class (here Error).
throw new CustomError("a message");

## Advanced error class

function CustomError(customValue) {
CustomError.super.call(this, "custom error message");
this.customValue = customValue;
}
makeError(CustomError);
// Feel free to extend the prototype.
CustomError.prototype.myMethod = function CustomError$myMethod() {
console.log("CustomError.myMethod (%s, %s)", this.code, this.message);
};
//-----
try {
throw new CustomError(42);
} catch (error) {
error.myMethod();
}

## Specialized error

var SpecializedError = makeError("SpecializedError", CustomError);
throw new SpecializedError(42);

## Inheritance

> Best for ES2015+.

import { BaseError } from "make-error";
class CustomError extends BaseError {
constructor() {
super("custom error message");
}
}

# Related

- make-error-cause: Make your own error types, with a cause!

# Contributions

Contributions are very welcomed, either on the documentation or on the code.

You may:

- report any issue you've encountered;
- fork and create a pull request.

# License

ISC © Julien Fontanet