403 lines
23 KiB
JavaScript
403 lines
23 KiB
JavaScript
var assert = require("assert");
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var uglify = require("../../");
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describe("Arrow functions", function() {
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it("Should not accept spread tokens on non-last parameters or without arguments parentheses", function() {
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var tests = [
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"var a = ...a => {return a.join()}",
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"var b = (a, ...b, c) => { return a + b.join() + c}",
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"var c = (...a, b) => a.join()"
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];
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var test = function(code) {
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return function() {
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uglify.parse(code);
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}
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}
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var error = function(e) {
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return e instanceof uglify.JS_Parse_Error &&
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e.message === "Unexpected token: expand (...)";
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}
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for (var i = 0; i < tests.length; i++) {
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assert.throws(test(tests[i]), error);
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}
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});
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it("Should not accept holes in object binding patterns, while still allowing a trailing elision", function() {
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var tests = [
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"f = ({, , ...x} = [1, 2]) => {};"
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];
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var test = function(code) {
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return function() {
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uglify.parse(code);
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}
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}
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var error = function(e) {
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return e instanceof uglify.JS_Parse_Error &&
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e.message === "Unexpected token: punc (,)";
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}
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for (var i = 0; i < tests.length; i++) {
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assert.throws(test(tests[i]), error);
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}
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});
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it("Should not accept newlines before arrow token", function() {
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var tests = [
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"f = foo\n=> 'foo';",
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"f = (foo, bar)\n=> 'foo';",
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"f = ()\n=> 'foo';",
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"foo((bar)\n=>'baz';);"
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];
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var test = function(code) {
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return function() {
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uglify.parse(code);
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}
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}
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var error = function(e) {
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return e instanceof uglify.JS_Parse_Error &&
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e.message === "Unexpected newline before arrow (=>)";
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}
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for (var i = 0; i < tests.length; i++) {
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assert.throws(test(tests[i]), error);
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}
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});
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it("Should not accept arrow functions in the middle or end of an expression", function() {
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var tests = [
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"typeof x => 0",
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"0 + x => 0"
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];
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var test = function(code) {
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return function() {
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uglify.parse(code);
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}
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}
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var error = function(e) {
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return e instanceof uglify.JS_Parse_Error &&
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e.message === "Unexpected token: arrow (=>)";
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}
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for (var i = 0; i < tests.length; i++) {
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assert.throws(test(tests[i]), error);
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}
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});
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it("Should parse a function containing default assignment correctly", function() {
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var ast = uglify.parse("var a = (a = 123) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// First argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].right instanceof uglify.AST_Number);
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ast = uglify.parse("var a = (a = a) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// First argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].right instanceof uglify.AST_SymbolRef);
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});
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it("Should parse a function containing default assignments in destructuring correctly", function() {
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var ast = uglify.parse("var a = ([a = 123]) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// First argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].right instanceof uglify.AST_Number);
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ast = uglify.parse("var a = ({a = 123}) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// First argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
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// First object element in first argument
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.right instanceof uglify.AST_Number);
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ast = uglify.parse("var a = ({a: a = 123}) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// First argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
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// Content destructuring of first argument
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectProperty);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.right instanceof uglify.AST_Number);
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});
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it("Should parse a function containing default assignments in complex destructuring correctly", function() {
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var ast = uglify.parse("var a = ([a, [b = 123]]) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// Check first argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
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// Check whole destructuring structure of first argument
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
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assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].is_array, true);
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// Check content of second destructuring element (which is the nested destructuring pattern)
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0] instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].right instanceof uglify.AST_Number);
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ast = uglify.parse("var a = ([a, {b: c = 123}]) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// Check first argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
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// Check whole destructuring structure of first argument
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
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assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].is_array, false);
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// Check content of second destructuring element (which is the nested destructuring pattern)
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0] instanceof uglify.AST_ObjectKeyVal);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].key, "b");
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value instanceof uglify.AST_DefaultAssign);
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.operator, "=");
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.right instanceof uglify.AST_Number);
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ast = uglify.parse("var a = ({a, b: {b = 123}}) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// Check first argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
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// First argument, property 1
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_SymbolFunarg);
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// First argument, property 2
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assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_ObjectKeyVal);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].key, "b");
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assert(ast.body[0].definitions[0].value.argnames[0].names[1].value instanceof uglify.AST_Destructuring);
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// Check content of nested destructuring
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var content = ast.body[0].definitions[0].value.argnames[0].names[1].value
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assert.strictEqual(content.is_array, false);
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assert.strictEqual(content.names.length, 1);
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assert(content.names[0] instanceof uglify.AST_ObjectKeyVal);
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// Content of first property in nested destructuring
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assert.strictEqual(content.names[0].key, "b");
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assert(content.names[0].value instanceof uglify.AST_DefaultAssign);
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assert(content.names[0].value.left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(content.names[0].value.operator, "=");
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assert(content.names[0].value.right instanceof uglify.AST_Number);
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ast = uglify.parse("var a = ({a: {b = 123}}) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// Check first argument
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
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// Check whole destructuring structure of first argument
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
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assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_Destructuring);
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// Check content of nested destructuring
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content = ast.body[0].definitions[0].value.argnames[0].names[0].value
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assert.strictEqual(content.is_array, false);
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assert.strictEqual(content.names.length, 1);
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assert(content.names[0] instanceof uglify.AST_ObjectKeyVal);
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// Check first property of nested destructuring
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assert.strictEqual(content.names[0].key, "b");
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assert(content.names[0].value instanceof uglify.AST_DefaultAssign);
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assert(content.names[0].value.left instanceof uglify.AST_SymbolFunarg);
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assert.strictEqual(content.names[0].value.operator, "=");
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assert(content.names[0].value.right instanceof uglify.AST_Number);
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});
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it("Should parse spread correctly", function() {
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var ast = uglify.parse("var a = (a, b, ...c) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 3);
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// Check parameters
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_SymbolFunarg);
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assert(ast.body[0].definitions[0].value.argnames[1] instanceof uglify.AST_SymbolFunarg);
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assert(ast.body[0].definitions[0].value.argnames[2] instanceof uglify.AST_Expansion);
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assert(ast.body[0].definitions[0].value.argnames[2].expression instanceof uglify.AST_SymbolFunarg);
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ast = uglify.parse("var a = ([a, b, ...c]) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
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assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
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// Check first parameter
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assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
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assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
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// Check content first parameter
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assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
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assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_SymbolFunarg);
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assert(ast.body[0].definitions[0].value.argnames[0].names[2] instanceof uglify.AST_Expansion);
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assert(ast.body[0].definitions[0].value.argnames[0].names[2].expression instanceof uglify.AST_SymbolFunarg);
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ast = uglify.parse("var a = ([a, b, [c, ...d]]) => {}");
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assert(ast.body[0] instanceof uglify.AST_Var);
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assert.strictEqual(ast.body[0].definitions.length, 1);
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assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
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assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
|
|
assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
|
|
|
|
// Check first parameter
|
|
assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
|
|
|
|
// Check content outer destructuring array
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_SymbolFunarg);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[2] instanceof uglify.AST_Destructuring);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[2].is_array, true);
|
|
|
|
// Check content nested destructuring array
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[2].names.length, 2);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[0] instanceof uglify.AST_SymbolFunarg);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[1] instanceof uglify.AST_Expansion);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[1].expression instanceof uglify.AST_SymbolFunarg);
|
|
|
|
|
|
ast = uglify.parse("var a = ({a: [b, ...c]}) => {}");
|
|
assert(ast.body[0] instanceof uglify.AST_Var);
|
|
assert.strictEqual(ast.body[0].definitions.length, 1);
|
|
assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
|
|
assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
|
|
assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
|
|
|
|
// Check first parameter
|
|
assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
|
|
|
|
// Check outer destructuring object
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_Destructuring);
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.is_array, true);
|
|
|
|
// Check content nested destructuring array
|
|
assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.names.length, 2);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[0] instanceof uglify.AST_SymbolFunarg);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[1] instanceof uglify.AST_Expansion);
|
|
assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[1].expression instanceof uglify.AST_SymbolFunarg);
|
|
});
|
|
|
|
it("Should handle arrow function with bind", function() {
|
|
function minify(code) {
|
|
return uglify.minify(code, {
|
|
mangle: false
|
|
}).code;
|
|
}
|
|
|
|
assert.strictEqual(
|
|
minify(minify("test(((index) => { console.log(this, index); }).bind(this, 1));")),
|
|
"test((index=>{console.log(this,index)}).bind(this,1));"
|
|
);
|
|
assert.strictEqual(
|
|
minify(minify('test(((index) => { console.log(this, index); })["bind"](this, 1));')),
|
|
"test((index=>{console.log(this,index)}).bind(this,1));"
|
|
);
|
|
});
|
|
|
|
});
|