disallow reassigning function
declarations (no-func-assign)
The "extends": "eslint:recommended"
property in a configuration file enables this rule.
JavaScript functions can be written as a FunctionDeclaration function foo() { ... }
or as a FunctionExpression var foo = function() { ... };
. While a JavaScript interpreter might tolerate it, overwriting/reassigning a function written as a FunctionDeclaration is often indicative of a mistake or issue.
function foo() {}
foo = bar;
Rule Details
This rule disallows reassigning function
declarations.
Examples of incorrect code for this rule:
/*eslint no-func-assign: "error"*/
function foo() {}
foo = bar;
function foo() {
foo = bar;
}
Examples of incorrect code for this rule, unlike the corresponding rule in JSHint:
/*eslint no-func-assign: "error"*/
foo = bar;
function foo() {}
Examples of correct code for this rule:
/*eslint no-func-assign: "error"*/
var foo = function () {}
foo = bar;
function foo(foo) { // `foo` is shadowed.
foo = bar;
}
function foo() {
var foo = bar; // `foo` is shadowed.
}
Version
This rule was introduced in ESLint 0.0.9.