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default-param-last

Enforce default parameters to be last.

Examples

This rule extends the base eslint/default-param-last rule. It adds support for optional parameters.

/* eslint @typescript-eslint/default-param-last: "error" */

function f(a = 0, b: number) {}
function f(a: number, b = 0, c: number) {}
function f(a: number, b?: number, c: number) {}
class Foo {
constructor(public a = 10, private b: number) {}
}
class Foo {
constructor(public a?: number, private b: number) {}
}

How to Use

.eslintrc.cjs
module.exports = {
"rules": {
// Note: you must disable the base rule as it can report incorrect errors
"default-param-last": "off",
"@typescript-eslint/default-param-last": "warn"
}
};

Options

See eslint/default-param-last options.

Taken with ❤️ from ESLint core

Resources