Disallow Unnecessary Strict Pragma (no-extra-strict)
Replacement notice: This rule was removed in ESLint v1.0 and replaced by the strict rule. Both "global"
and "function"
mode in the strict rule implement this rule’s behavior.
The "use strict";
directive applies to the scope in which it appears and all inner scopes contained within that scope. Therefore, using the "use strict";
directive in one of these inner scopes is unnecessary.
"use strict";
(function () {
"use strict";
var foo = true;
}());
Rule Details
This rule is aimed at preventing unnecessary "use strict";
directives. As such, it will warn when it encounters a "use strict";
directive when already in strict mode.
The following patterns are considered warnings:
"use strict";
(function () {
"use strict";
var foo = true;
}());
The following patterns are not considered warnings:
"use strict";
(function () {
var foo = true;
}());
(function () {
"use strict";
var foo = true;
}());
Further Reading
Version
This rule was introduced in ESLint 0.3.0 and removed in 1.0.0-rc-1.