default-param-last
Enforce default parameters to be last.
Attributes
- Included in configs
- ✅ Recommended
- 🔒 Strict
- Fixable
- 🔧 Automated Fixer
- 💡 Suggestion Fixer
- 💭 Requires type information
Rule Details
This rule extends the base eslint/default-param-last rule.
It adds support for optional parameters.
- ❌ Incorrect
- ✅ Correct
/* 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) {}
}
/* eslint @typescript-eslint/default-param-last: "error" */
function f(a = 0) {}
function f(a: number, b = 0) {}
function f(a: number, b?: number) {}
function f(a: number, b?: number, c = 0) {}
function f(a: number, b = 0, c?: number) {}
class Foo {
constructor(public a, private b = 0) {}
}
class Foo {
constructor(public a, private b?: number) {}
}
How to Use
.eslintrc.cjs
module.exports = {
// 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