let assert = require("assert"); let UglifyJS = require("../node"); describe("With", function() { it("Should throw syntaxError when using with statement in strict mode", function() { let code = '"use strict";\nthrow NotEarlyError;\nwith ({}) { }'; let test = function() { UglifyJS.parse(code); } let error = function(e) { return e instanceof UglifyJS.JS_Parse_Error && e.message === "Strict mode may not include a with statement"; } assert.throws(test, error); }); it("Should set uses_with for scopes involving With statements", function() { let ast = UglifyJS.parse("with(e) {f(1, 2)}"); ast.figure_out_scope(); assert.equal(ast.uses_with, true); assert.equal(ast.body[0].expression.scope.resolve().uses_with, true); assert.equal(ast.body[0].body.body[0].body.expression.scope.resolve().uses_with, true); }); });