JS.TS.DEFAULT.PARAM.LAST
Enforce default parameters to be last
Rule Details
This rule extends the base eslint/default-param-last (https://eslint.org/docs/rules/default-param-last) rule.
It adds support for optional parameters.
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Incorrect
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/* 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) {}
}
Correct
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/* 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
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{
// note you must disable the base rule as it can report incorrect errors
"default-param-last": "off",
"@typescript-eslint/default-param-last": ["error"]
}
Options
See eslint/default-param-last options (https://eslint.org/docs/rules/default-param-last#options).