Skip to main content

default-param-last

Enforce default parameters to be last.

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

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,
) {}
}
Open in Playground

Options

See eslint/default-param-last's options.

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": "error"
}
};

Try this rule in the playground ↗

Resources

Taken with ❤️ from ESLint core.