13 lines
361 B
JavaScript
13 lines
361 B
JavaScript
var t = require("../../types");
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module.exports = function (ast) {
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var body = ast.program.body;
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var first = body[0];
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var noStrict = !first || first.type !== "ExpressionStatement" || first.expression.type !== "Literal" || first.expression.value !== "use strict";
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if (noStrict) {
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body.unshift(t.expressionStatement(t.literal("use strict")));
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}
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};
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