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/**
* @fileoverview Rule to flag or require global strict mode.
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
var mode = context.options[0];
if (mode === "always") {
return {
"Program": function(node) {
if (node.body.length > 0) {
var statement = node.body[0];
if (!(statement.type === "ExpressionStatement" && statement.expression.value === "use strict")) {
context.report(node, "Use the global form of \"use strict\".");
}
}
}
};
} else { // mode = "never"
return {
"ExpressionStatement": function(node) {
var parent = context.getAncestors().pop();
if (node.expression.value === "use strict" && parent.type === "Program") {
context.report(node, "Use the function form of \"use strict\".");
}
}
};
}
};
module.exports.schema = [
{
"enum": ["always", "never"]
}
];
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