66 lines
2.6 KiB
JavaScript
66 lines
2.6 KiB
JavaScript
var assert = require("assert");
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var UglifyJS = require("../node");
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describe("async", function() {
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it("Should reject `await` as symbol name within async functions only", function() {
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[
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"function await() {}",
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"function(await) {}",
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"function() { await; }",
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"function() { await: {} }",
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"function() { var await; }",
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"function() { function await() {} }",
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"function() { try {} catch (await) {} }",
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].forEach(function(code) {
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var ast = UglifyJS.parse("(" + code + ")();");
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assert.strictEqual(ast.TYPE, "Toplevel");
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assert.strictEqual(ast.body.length, 1);
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assert.strictEqual(ast.body[0].TYPE, "SimpleStatement");
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assert.strictEqual(ast.body[0].body.TYPE, "Call");
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assert.strictEqual(ast.body[0].body.expression.TYPE, "Function");
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assert.throws(function() {
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UglifyJS.parse("(async " + code + ")();");
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}, function(e) {
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return e instanceof UglifyJS.JS_Parse_Error;
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}, code);
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});
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});
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it("Should reject `await` expression outside of async functions", function() {
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[
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"await 42;",
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"function f() { await 42; }",
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"async function f() { function g() { await 42; } }",
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].forEach(function(code) {
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assert.throws(function() {
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UglifyJS.parse(code);
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}, function(e) {
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return e instanceof UglifyJS.JS_Parse_Error;
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}, code);
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});
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});
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it("Should reject `await` expression directly on computed key of function argument", function() {
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[
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"function f({ [await 42]: a }) {}",
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"async function f({ [await 42]: a }) {}",
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].forEach(function(code) {
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assert.throws(function() {
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UglifyJS.parse(code);
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}, function(e) {
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return e instanceof UglifyJS.JS_Parse_Error;
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}, code);
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});
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});
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it("Should accept `await` expression nested within computed key of function argument", function() {
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[
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"function f({ [async function() { await 42; }()]: a }) {}",
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"async function f({ [async function() { await 42; }()]: a }) {}",
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].forEach(function(code) {
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var ast = UglifyJS.parse(code);
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assert.strictEqual(ast.TYPE, "Toplevel");
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assert.strictEqual(ast.body.length, 1);
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assert.strictEqual(ast.body[0].argnames.length, 1);
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assert.strictEqual(ast.body[0].argnames[0].TYPE, "DestructuredObject");
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});
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});
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});
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