ifs_1: { options = { conditionals: true, } input: { if (foo) bar(); if (!foo); else bar(); if (foo); else bar(); if (foo); else; } expect: { foo&&bar(); foo&&bar(); foo||bar(); foo; } } ifs_2: { options = { conditionals: true, } input: { if (foo) { x(); } else if (bar) { y(); } else if (baz) { z(); } if (foo) { x(); } else if (bar) { y(); } else if (baz) { z(); } else { t(); } } expect: { foo ? x() : bar ? y() : baz && z(); (foo ? x : bar ? y : baz ? z : t)(); } } ifs_3_should_warn: { options = { booleans: true, conditionals: true, dead_code: true, evaluate: true, side_effects: true, } input: { var x, y; if (x && !(x + "1") && y) { // 1 var qq; foo(); } else { bar(); } if (x || !!(x + "1") || y) { // 2 foo(); } else { var jj; bar(); } } expect: { var x, y; var qq; bar(); // 1 var jj; foo(); // 2 } } ifs_4: { options = { conditionals: true, } input: { if (foo && bar) { x(foo)[10].bar.baz = something(); } else x(foo)[10].bar.baz = something_else(); } expect: { foo && bar ? x(foo)[10].bar.baz = something() : x(foo)[10].bar.baz = something_else(); } } ifs_5: { options = { comparisons: true, conditionals: true, if_return: true, } input: { function f() { if (foo) return; bar(); baz(); } function g() { if (foo) return; if (bar) return; if (baz) return; if (baa) return; a(); b(); } } expect: { function f() { if (!foo) { bar(); baz(); } } function g() { if (!(foo || bar || baz || baa)) { a(); b(); } } } } ifs_6: { options = { comparisons: true, conditionals: true, } input: { var x, y; if (!foo && !bar && !baz && !boo) { x = 10; } else { x = 20; } if (y) { x[foo] = 10; } else { x[foo] = 20; } if (foo) { x[bar] = 10; } else { x[bar] = 20; } } expect: { var x, y; x = foo || bar || baz || boo ? 20 : 10; x[foo] = y ? 10 : 20; foo ? x[bar] = 10 : x[bar] = 20; } } ifs_7: { options = { conditionals: true, } input: { if (A); else; if (A) while (B); else; if (A); else while (C); if (A) while (B); else while (C); } expect: { A; if (A) while (B); if (!A) while (C); if (A) while (B); else while (C); } } cond_1: { options = { conditionals: true, } input: { function foo(do_something, some_condition) { if (some_condition) { do_something(x); } else { do_something(y); } if (some_condition) { side_effects(x); } else { side_effects(y); } } } expect: { function foo(do_something, some_condition) { do_something(some_condition ? x : y); some_condition ? side_effects(x) : side_effects(y); } } } cond_2: { options = { conditionals: true, } input: { function foo(x, FooBar, some_condition) { if (some_condition) { x = new FooBar(1); } else { x = new FooBar(2); } } } expect: { function foo(x, FooBar, some_condition) { x = new FooBar(some_condition ? 1 : 2); } } } cond_3: { options = { conditionals: true, } input: { var FooBar; if (some_condition()) { new FooBar(1); } else { FooBar(2); } } expect: { var FooBar; some_condition() ? new FooBar(1) : FooBar(2); } } cond_4: { options = { conditionals: true, } input: { var do_something; if (some_condition()) { do_something(); } else { do_something(); } if (some_condition()) { side_effects(); } else { side_effects(); } } expect: { var do_something; some_condition(), do_something(); some_condition(), side_effects(); } } cond_5: { options = { conditionals: true, } input: { if (some_condition()) { if (some_other_condition()) { do_something(); } else { alternate(); } } else { alternate(); } if (some_condition()) { if (some_other_condition()) { do_something(); } } } expect: { (some_condition() && some_other_condition() ? do_something : alternate)(); some_condition() && some_other_condition() && do_something(); } } cond_6: { options = { booleans: true, conditionals: true, } input: { x ? a : b; x ? a : a; x ? y ? a : b : c; x ? y ? a : a : b; x ? y ? a : b : b; x ? y ? a : b : a; x ? y ? a : a : a; x ? a : y ? b : c; x ? a : y ? a : b; x ? a : y ? b : b; x ? a : y ? b : a; x ? a : y ? a : a; } expect: { x ? a : b; x, a; x ? y ? a : b : c; x ? (y, a) : b; x && y ? a : b; !x || y ? a : b; x && y, a; x ? a : y ? b : c; x || y ? a : b; x ? a : (y, b); !x && y ? b : a; !x && y, a; } } cond_7: { options = { conditionals: true, evaluate: true, side_effects: true, } input: { var x, y, z, a, b; // compress these if (y) { x = 1+1; } else { x = 2; } if (y) { x = 1+1; } else if (z) { x = 2; } else { x = 3-1; } x = y ? 'foo' : 'fo'+'o'; x = y ? 'foo' : y ? 'foo' : 'fo'+'o'; // Compress conditions that have side effects if (condition()) { x = 10+10; } else { x = 20; } if (z) { x = 'fuji'; } else if (condition()) { x = 'fu'+'ji'; } else { x = 'fuji'; } x = condition() ? 'foobar' : 'foo'+'bar'; // don't compress these x = y ? a : b; x = y ? 'foo' : 'fo'; } expect: { var x, y, z, a, b; x = 2; x = 2; x = 'foo'; x = 'foo'; x = (condition(), 20); x = (z || condition(), 'fuji'); x = (condition(), 'foobar'); x = y ? a : b; x = y ? 'foo' : 'fo'; } } cond_7_1: { options = { conditionals: true, evaluate: true, } input: { var x; // access to global should be assumed to have side effects if (y) { x = 1+1; } else { x = 2; } } expect: { var x; x = (y, 2); } } cond_8: { options = { booleans: false, conditionals: true, evaluate: true, } input: { var a; // compress these a = condition ? true : false; a = !condition ? true : false; a = condition() ? true : false; a = condition ? !0 : !1; a = !condition ? !null : !2; a = condition() ? !0 : !-3.5; if (condition) { a = true; } else { a = false; } if (condition) { a = !0; } else { a = !1; } a = condition ? false : true; a = !condition ? false : true; a = condition() ? false : true; a = condition ? !3 : !0; a = !condition ? !2 : !0; a = condition() ? !1 : !0; if (condition) { a = false; } else { a = true; } if (condition) { a = !1; } else { a = !0; } // don't compress these a = condition ? 1 : false; a = !condition ? true : 0; a = condition ? 1 : 0; } expect: { var a; a = !!condition; a = !condition; a = !!condition(); a = !!condition; a = !condition; a = !!condition(); a = !!condition; a = !!condition; a = !condition; a = !!condition; a = !condition(); a = !condition; a = !!condition; a = !condition(); a = !condition; a = !condition; a = !!condition && 1; a = !condition || 0; a = condition ? 1 : 0; } } cond_8b: { options = { booleans: true, conditionals: true, evaluate: true, } input: { var a; // compress these a = condition ? true : false; a = !condition ? true : false; a = condition() ? true : false; a = condition ? !0 : !1; a = !condition ? !null : !2; a = condition() ? !0 : !-3.5; if (condition) { a = true; } else { a = false; } if (condition) { a = !0; } else { a = !1; } a = condition ? false : true; a = !condition ? false : true; a = condition() ? false : true; a = condition ? !3 : !0; a = !condition ? !2 : !0; a = condition() ? !1 : !0; if (condition) { a = false; } else { a = true; } if (condition) { a = !1; } else { a = !0; } a = condition ? 1 : false; a = !condition ? true : 0; a = condition ? 1 : 0; } expect: { var a; a = !!condition; a = !condition; a = !!condition(); a = !!condition; a = !condition; a = !!condition(); a = !!condition; a = !!condition; a = !condition; a = !!condition; a = !condition(); a = !condition; a = !!condition; a = !condition(); a = !condition; a = !condition; a = !!condition && 1; a = !condition || 0; a = condition ? 1 : 0; } } cond_8c: { options = { booleans: false, conditionals: true, evaluate: false, } input: { var a; // compress these a = condition ? true : false; a = !condition ? true : false; a = condition() ? true : false; a = condition ? !0 : !1; a = !condition ? !null : !2; a = condition() ? !0 : !-3.5; if (condition) { a = true; } else { a = false; } if (condition) { a = !0; } else { a = !1; } a = condition ? false : true; a = !condition ? false : true; a = condition() ? false : true; a = condition ? !3 : !0; a = !condition ? !2 : !0; a = condition() ? !1 : !0; if (condition) { a = false; } else { a = true; } if (condition) { a = !1; } else { a = !0; } a = condition ? 1 : false; a = !condition ? true : 0; a = condition ? 1 : 0; } expect: { var a; a = !!condition; a = !condition; a = !!condition(); a = !!condition; a = !condition; a = !!condition() || !-3.5; a = !!condition; a = !!condition; a = !condition; a = !!condition; a = !condition(); a = !condition; a = !!condition; a = !condition(); a = !condition; a = !condition; a = !!condition && 1; a = !condition || 0; a = condition ? 1 : 0; } } cond_9: { options = { conditionals: true, } input: { function f(x, y) { g() ? x(1) : x(2); x ? (y || x)() : (y || x)(); x ? y(a, b) : y(d, b, c); x ? y(a, b, c) : y(a, b, c); x ? y(a, b, c) : y(a, b, f); x ? y(a, b, c) : y(a, e, c); x ? y(a, b, c) : y(a, e, f); x ? y(a, b, c) : y(d, b, c); x ? y(a, b, c) : y(d, b, f); x ? y(a, b, c) : y(d, e, c); x ? y(a, b, c) : y(d, e, f); } } expect: { function f(x, y) { g() ? x(1) : x(2); x, (y || x)(); x ? y(a, b) : y(d, b, c); x, y(a, b, c); y(a, b, x ? c : f); y(a, x ? b : e, c); x ? y(a, b, c) : y(a, e, f); y(x ? a : d, b, c); x ? y(a, b, c) : y(d, b, f); x ? y(a, b, c) : y(d, e, c); x ? y(a, b, c) : y(d, e, f); } } } cond_10: { options = { conditionals: true, if_return: true, } input: { function f(a) { if (1 == a) return "foo"; if (2 == a) return "foo"; if (3 == a) return "foo"; if (4 == a) return 42; if (5 == a) return "foo"; if (6 == a) return "foo"; return "bar"; } console.log(f(1), f(2), f(3), f(4), f(5), f(6), f(7)); } expect: { function f(a) { return 1 == a || 2 == a || 3 == a ? "foo" : 4 == a ? 42 : 5 == a || 6 == a ? "foo" : "bar"; } console.log(f(1), f(2), f(3), f(4), f(5), f(6), f(7)); } expect_stdout: "foo foo foo 42 foo foo bar" } cond_11: { options = { conditionals: true, } input: { var o = { p: "foo", q: function() { return this.p; } }; function f() { return "bar"; } function g(a) { return a ? f() : o.q(); } console.log(g(0), g(1)); } expect: { var o = { p: "foo", q: function() { return this.p; } }; function f() { return "bar"; } function g(a) { return a ? f() : o.q(); } console.log(g(0), g(1)); } expect_stdout: "foo bar" } cond_12: { options = { conditionals: true, } input: { x ? y && a : a; x ? y || a : a; x ? a : y && a; x ? a : y || a; } expect: { (!x || y) && a; x && y || a; (x || y) && a; !x && y || a; } } cond_13: { options = { conditionals: true, } input: { x ? y(a) : z(a); x ? y.f(a) : z.f(a); x ? y.f(a) : z.g(a); x ? y.f()(a) : z.g()(a); x ? y.f.u(a) : z.g.u(a); x ? y.f().u(a) : z.g().u(a); } expect: { (x ? y : z)(a); (x ? y : z).f(a); x ? y.f(a) : z.g(a); (x ? y.f() : z.g())(a); (x ? y.f : z.g).u(a); (x ? y.f() : z.g()).u(a); } } ternary_boolean_consequent: { options = { booleans: true, collapse_vars: true, comparisons: true, conditionals: true, dead_code: true, evaluate: true, hoist_funs: true, if_return: true, join_vars: true, keep_fargs: true, loops: true, properties: true, sequences: true, side_effects: true, unused: true, } input: { function f1() { return a == b ? true : x; } function f2() { return a == b ? false : x; } function f3() { return a < b ? !0 : x; } function f4() { return a < b ? !1 : x; } function f5() { return c ? !0 : x; } function f6() { return c ? false : x; } function f7() { return !c ? true : x; } function f8() { return !c ? !1 : x; } } expect: { function f1() { return a == b || x; } function f2() { return a != b && x; } function f3() { return a < b || x; } function f4() { return !(a < b) && x; } function f5() { return !!c || x; } function f6() { return !c && x; } function f7() { return !c || x; } function f8() { return !!c && x; } } } ternary_boolean_alternative: { options = { booleans: true, collapse_vars: true, comparisons: true, conditionals: true, dead_code: true, evaluate: true, hoist_funs: true, if_return: true, join_vars: true, keep_fargs: true, loops: true, properties: true, sequences: true, side_effects: true, unused: true, } input: { function f1() { return a == b ? x : true; } function f2() { return a == b ? x : false; } function f3() { return a < b ? x : !0; } function f4() { return a < b ? x : !1; } function f5() { return c ? x : true; } function f6() { return c ? x : !1; } function f7() { return !c ? x : !0; } function f8() { return !c ? x : false; } } expect: { function f1() { return a != b || x; } function f2() { return a == b && x; } function f3() { return !(a < b) || x; } function f4() { return a < b && x; } function f5() { return !c || x; } function f6() { return !!c && x; } function f7() { return !!c || x; } function f8() { return !c && x; } } } trivial_boolean_ternary_expressions : { options = { booleans: true, conditionals: true, evaluate: true, side_effects: true, } input: { f('foo' in m ? true : false); f('foo' in m ? false : true); f(g ? true : false); f(foo() ? true : false); f("bar" ? true : false); f(5 ? true : false); f(5.7 ? true : false); f(x - y ? true : false); f(x == y ? true : false); f(x === y ? !0 : !1); f(x < y ? !0 : false); f(x <= y ? true : false); f(x > y ? true : !1); f(x >= y ? !0 : !1); f(g ? false : true); f(foo() ? false : true); f("bar" ? false : true); f(5 ? false : true); f(5.7 ? false : true); f(x - y ? false : true); f(x == y ? !1 : !0); f(x === y ? false : true); f(x < y ? false : true); f(x <= y ? false : !0); f(x > y ? !1 : true); f(x >= y ? !1 : !0); } expect: { f('foo' in m); f(!('foo' in m)); f(!!g); f(!!foo()); f(!0); f(!0); f(!0); f(!!(x - y)); f(x == y); f(x === y); f(x < y); f(x <= y); f(x > y); f(x >= y); f(!g); f(!foo()); f(!1); f(!1); f(!1); f(!(x - y)); f(x != y); f(x !== y); f(!(x < y)); f(!(x <= y)); f(!(x > y)); f(!(x >= y)); } } issue_1154: { options = { booleans: true, conditionals: true, evaluate: true, side_effects: true, } input: { function f1(x) { return x ? -1 : -1; } function f2(x) { return x ? +2 : +2; } function f3(x) { return x ? ~3 : ~3; } function f4(x) { return x ? !4 : !4; } function f5(x) { return x ? void 5 : void 5; } function f6(x) { return x ? typeof 6 : typeof 6; } function g1() { return g() ? -1 : -1; } function g2() { return g() ? +2 : +2; } function g3() { return g() ? ~3 : ~3; } function g4() { return g() ? !4 : !4; } function g5() { return g() ? void 5 : void 5; } function g6() { return g() ? typeof 6 : typeof 6; } } expect: { function f1(x) { return -1; } function f2(x) { return 2; } function f3(x) { return -4; } function f4(x) { return !1; } function f5(x) { return; } function f6(x) { return "number"; } function g1() { return g(), -1; } function g2() { return g(), 2; } function g3() { return g(), -4; } function g4() { return g(), !1; } function g5() { return void g(); } function g6() { return g(), "number"; } } } no_evaluate: { options = { conditionals: true, evaluate: false, side_effects: true, } input: { function f(b) { a = b ? !0 : !0; a = b ? ~1 : ~1; a = b ? -2 : -2; a = b ? +3 : +3; } } expect: { function f(b) { a = !0; a = ~1; a = -2; a = +3; } } } equality_conditionals_false: { options = { conditionals: false, sequences: true, } input: { function f(a, b, c) { console.log( a == (b ? a : a), a == (b ? a : c), a != (b ? a : a), a != (b ? a : c), a === (b ? a : a), a === (b ? a : c), a !== (b ? a : a), a !== (b ? a : c) ); } f(0, 0, 0); f(0, true, 0); f(1, 2, 3); f(1, null, 3); f(NaN); f(NaN, "foo"); } expect: { function f(a, b, c) { console.log( a == (b ? a : a), a == (b ? a : c), a != (b ? a : a), a != (b ? a : c), a === (b ? a : a), a === (b ? a : c), a !== (b ? a : a), a !== (b ? a : c) ); } f(0, 0, 0), f(0, true, 0), f(1, 2, 3), f(1, null, 3), f(NaN), f(NaN, "foo"); } expect_stdout: true } equality_conditionals_true: { options = { conditionals: true, sequences: true, } input: { function f(a, b, c) { console.log( a == (b ? a : a), a == (b ? a : c), a != (b ? a : a), a != (b ? a : c), a === (b ? a : a), a === (b ? a : c), a !== (b ? a : a), a !== (b ? a : c) ); } f(0, 0, 0); f(0, true, 0); f(1, 2, 3); f(1, null, 3); f(NaN); f(NaN, "foo"); } expect: { function f(a, b, c) { console.log( (b, a == a), a == (b ? a : c), (b, a != a), a != (b ? a : c), (b, a === a), a === (b ? a : c), (b, a !== a), a !== (b ? a : c) ); } f(0, 0, 0), f(0, true, 0), f(1, 2, 3), f(1, null, 3), f(NaN), f(NaN, "foo"); } expect_stdout: true } issue_1645_1: { options = { conditionals: true, } input: { var a = 100, b = 10; (b = a) ? a++ + (b += a) ? b += a : b += a : b ^= a; console.log(a, b); } expect: { var a = 100, b = 10; (b = a) ? (a++ + (b += a), b += a) : b ^= a; console.log(a,b); } expect_stdout: true } issue_1645_2: { options = { conditionals: true, } input: { var a = 0; function f() { return a++; } f() ? a += 2 : a += 4; console.log(a); } expect: { var a = 0; function f(){ return a++; } f() ? a += 2 : a += 4; console.log(a); } expect_stdout: true } condition_symbol_matches_consequent: { options = { conditionals: true, } input: { function foo(x, y) { return x ? x : y; } function bar() { return g ? g : h; } var g = 4; var h = 5; console.log(foo(3, null), foo(0, 7), foo(true, false), bar()); } expect: { function foo(x, y) { return x || y; } function bar() { return g || h; } var g = 4; var h = 5; console.log(foo(3, null), foo(0, 7), foo(true, false), bar()); } expect_stdout: "3 7 true 4" } delete_conditional_1: { options = { booleans: true, conditionals: true, evaluate: true, side_effects: true, } input: { console.log(delete (1 ? undefined : x)); console.log(delete (1 ? void 0 : x)); console.log(delete (1 ? Infinity : x)); console.log(delete (1 ? 1 / 0 : x)); console.log(delete (1 ? NaN : x)); console.log(delete (1 ? 0 / 0 : x)); } expect: { console.log(!0); console.log(!0); console.log(!0); console.log(!0); console.log(!0); console.log(!0); } expect_stdout: true } delete_conditional_2: { options = { booleans: true, conditionals: true, evaluate: true, keep_infinity: true, side_effects: true, } input: { console.log(delete (0 ? x : undefined)); console.log(delete (0 ? x : void 0)); console.log(delete (0 ? x : Infinity)); console.log(delete (0 ? x : 1 / 0)); console.log(delete (0 ? x : NaN)); console.log(delete (0 ? x : 0 / 0)); } expect: { console.log(!0); console.log(!0); console.log(!0); console.log(!0); console.log(!0); console.log(!0); } expect_stdout: true } issue_2535_1: { options = { booleans: true, conditionals: true, evaluate: true, passes: 2, side_effects: true, } input: { if (true || x()) y(); if (true && x()) y(); if (x() || true) y(); if (x() && true) y(); if (false || x()) y(); if (false && x()) y(); if (x() || false) y(); if (x() && false) y(); } expect: { y(); x() && y(); x(), y(); x() && y(); x() && y(); x() && y(); x(); } } issue_2535_2: { options = { booleans: true, conditionals: true, evaluate: true, side_effects: true, } input: { function x() {} function y() { return "foo"; } console.log((x() || true) || y()); console.log((y() || true) || x()); console.log((x() || true) && y()); console.log((y() || true) && x()); console.log((x() && true) || y()); console.log((y() && true) || x()); console.log((x() && true) && y()); console.log((y() && true) && x()); console.log((x() || false) || y()); console.log((y() || false) || x()); console.log((x() || false) && y()); console.log((y() || false) && x()); console.log((x() && false) || y()); console.log((y() && false) || x()); console.log((x() && false) && y()); console.log((y() && false) && x()); } expect: { function x() {} function y() { return "foo"; } console.log(x() || !0); console.log(y() || !0); console.log((x(), y())); console.log((y(), x())); console.log(!!x() || y()); console.log(!!y() || x()); console.log(x() && y()); console.log(y() && x()); console.log(x() || y()); console.log(y() || x()); console.log(!!x() && y()); console.log(!!y() && x()); console.log((x(), y())); console.log((y(), x())); console.log(x() && !1); console.log(y() && !1); } expect_stdout: [ "true", "foo", "foo", "undefined", "foo", "true", "undefined", "undefined", "foo", "foo", "false", "undefined", "foo", "undefined", "undefined", "false", ] } issue_2560: { options = { conditionals: true, inline: true, reduce_funcs: true, reduce_vars: true, toplevel: true, unused: true, } input: { function log(x) { console.log(x); } function foo() { return log; } function bar() { if (x !== (x = foo())) { x(1); } else { x(2); } } var x = function() { console.log("init"); }; bar(); bar(); } expect: { function log(x) { console.log(x); } function bar() { x !== (x = log) ? x(1) : x(2); } var x = function() { console.log("init"); }; bar(); bar(); } expect_stdout: [ "1", "2", ] } hoist_decl: { options = { conditionals: true, join_vars: true, sequences: true, } input: { if (x()) { var a; y(); } else { z(); var b; } } expect: { var a, b; (x() ? y : z)(); } } to_and_or: { options = { conditionals: true, } input: { var values = [ 0, null, true, "foo", false, -1 / 0, void 0, ]; values.forEach(function(x) { values.forEach(function(y) { values.forEach(function(z) { console.log(x ? y || z : z); }); }); }); } expect: { var values = [ 0, null, true, "foo", false, -1 / 0, void 0, ]; values.forEach(function(x) { values.forEach(function(y) { values.forEach(function(z) { console.log(x && y || z); }); }); }); } expect_stdout: true } cond_seq_assign_1: { options = { conditionals: true, sequences: true, } input: { function f(a) { var t; if (a) { t = "foo"; t = "bar"; } else { console.log(t); t = 42; } console.log(t); } f(f); f(); } expect: { function f(a) { var t; t = a ? (t = "foo", "bar") : (console.log(t), 42), console.log(t); } f(f), f(); } expect_stdout: [ "bar", "undefined", "42", ] } cond_seq_assign_2: { options = { conditionals: true, sequences: true, } input: { function f(a) { var t; if (a) { t = "foo"; a = "bar"; } else { console.log(t); t = 42; } console.log(t); } f(f); f(); } expect: { function f(a) { var t; a ? (t = "foo", a = "bar") : (console.log(t), t = 42), console.log(t); } f(f), f(); } expect_stdout: [ "foo", "undefined", "42", ] } cond_seq_assign_3: { options = { assignments: true, conditionals: true, } input: { var c = 0; if (this) c = 1 + c, c = c + 1; else c = 1 + c, c = c + 1; console.log(c); } expect: { var c = 0; this, c = 1 + c, c += 1; console.log(c); } expect_stdout: "2" } issue_3271: { options = { conditionals: true, } input: { function f(a) { var i = 0, b = []; if (a) { b[i++] = 4, b[i++] = 1; } else { b[i++] = 3, b[i++] = 2, b[i++] = 1; } return b; } console.log(f(0).pop(), f(1).pop()); } expect: { function f(a) { var i = 0, b = []; a ? b[i++] = 4 : (b[i++] = 3, b[i++] = 2), b[i++] = 1; return b; } console.log(f(0).pop(), f(1).pop()); } expect_stdout: "1 1" } iife_condition: { options = { conditionals: true, side_effects: true, } input: { if (function() { return console; }()) console.log("PASS"); } expect: { !function() { return console; }() || console.log("PASS"); } expect_stdout: "PASS" } angularjs_chain: { options = { conditionals: true, passes: 2, side_effects: true, } input: { function nonComputedMember(left, right, context, create) { var lhs = left(); if (create && create !== 1) { if (lhs && lhs[right] == null) { lhs[right] = {}; } } var value = lhs != null ? lhs[right] : undefined; if (context) { return { context: lhs, name: right, value: value }; } else { return value; } } } expect: { function nonComputedMember(left, right, context, create) { var lhs = left(); create && 1 !== create && lhs && null == lhs[right] && (lhs[right] = {}); var value = null != lhs ? lhs[right] : void 0; return context ? { context: lhs, name: right, value: value } : value; } } } issue_3576: { options = { conditionals: true, evaluate: true, pure_getters: "strict", reduce_vars: true, } input: { var c = "FAIL"; (function(a) { (a = -1) ? (a && (a.a = 0)) : (a && (a.a = 0)); a && a[c = "PASS"]++; })(); console.log(c); } expect: { var c = "FAIL"; (function(a) { a = -1, a, a.a = 0; a, a[c = "PASS"]++; })(); console.log(c); } expect_stdout: "PASS" } issue_3668: { options = { conditionals: true, if_return: true, } input: { function f() { try { var undefined = typeof f; if (!f) return undefined; return; } catch (e) { return "FAIL"; } } console.log(f()); } expect: { function f() { try { var undefined = typeof f; return f ? void 0 : undefined; } catch (e) { return "FAIL"; } } console.log(f()); } expect_stdout: "undefined" } conditional_assignments_1: { options = { conditionals: true, sequences: true, } input: { function f(a, b, c, d) { a = b; if (c) a = d; return a; } function g(a, b, c, d) { a = b; if (c); else a = d; return a; } console.log(f(0, "FAIL", 1, "PASS"), g(0, "PASS", 1, "FAIL")); } expect: { function f(a, b, c, d) { return a = c ? d : b, a; } function g(a, b, c, d) { return a = c ? b : d, a; } console.log(f(0, "FAIL", 1, "PASS"), g(0, "PASS", 1, "FAIL")); } expect_stdout: "PASS PASS" } conditional_assignments_2: { options = { conditionals: true, sequences: true, } input: { function f1(b, c, d) { a = b; if (c) a = d; return a; } function f2(a, c, d) { a = b; if (c) a = d; return a; } function f3(a, b, d) { a = b; if (c) a = d; return a; } function f4(a, b, c) { a = b; if (c) a = d; return a; } } expect: { function f1(b, c, d) { return a = c ? d : b, a; } function f2(a, c, d) { return a = b, c && (a = d), a; } function f3(a, b, d) { return a = b, c && (a = d), a; } function f4(a, b, c) { return a = b, c && (a = d), a; } } } conditional_assignments_3: { options = { conditionals: true, sequences: true, } input: { console.log(function(a, b) { a = "PASS"; if (b) a = a; return a; }(0, 1)); } expect: { console.log(function(a, b) { return a = "PASS", b && (a = a), a; }(0, 1)); } expect_stdout: "PASS" } issue_3808_1: { options = { conditionals: true, side_effects: true, } input: { var a; a = "PASS", [] + "" && (a = "FAIL"); console.log(a); } expect: { var a; a = [] + "" ? "FAIL" : "PASS"; console.log(a); } expect_stdout: "PASS" } issue_3808_2: { options = { conditionals: true, side_effects: true, } input: { var a; console.log((a = "PASS", [] + "" && (a = "FAIL")), a); } expect: { var a; console.log((a = "PASS", [] + "" && (a = "FAIL")), a); } expect_stdout: " PASS" }