var UglifyJS = require('../../');
var assert = require("assert");
describe("arguments", function() {
it("Should known that arguments in functions are local scoped", function() {
var ast = UglifyJS.parse("var arguments; var f = function() {arguments.length}");
ast.figure_out_scope();
// Test scope of `var arguments`
assert.strictEqual(ast.find_variable("arguments").global, true);
// Select arguments symbol in function
var symbol = ast.body[1].definitions[0].value.find_variable("arguments");
assert.strictEqual(symbol.global, false);
assert.strictEqual(symbol.scope, ast. // From ast
body[1]. // Select 2nd statement (equals to `var f ...`)
definitions[0]. // First definition of selected statement
value // Select function as scope
);
});
it("Should recognize when a function uses arguments", function() {
var ast = UglifyJS.parse("function a(){function b(){function c(){}; return arguments[0];}}");
ast.figure_out_scope();
assert.strictEqual(ast.body[0].uses_arguments, false);
assert.strictEqual(ast.body[0].body[0].uses_arguments, true);
assert.strictEqual(ast.body[0].body[0].body[0].uses_arguments, false);
});
});22877cd3b8024ea4b6f7c45ee30'>treecommitdiff|
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