op_equals_left_local_var: { options = { assignments: true, evaluate: true, } input: { var x; x = x + 3; x = x - 3; x = x / 3; x = x * 3; x = x >> 3; x = x << 3; x = x >>> 3; x = x | 3; x = x ^ 3; x = x % 3; x = x & 3; x = x + g(); x = x - g(); x = x / g(); x = x * g(); x = x >> g(); x = x << g(); x = x >>> g(); x = x | g(); x = x ^ g(); x = x % g(); x = x & g(); } expect: { var x; x += 3; x -= 3; x /= 3; x *= 3; x >>= 3; x <<= 3; x >>>= 3; x |= 3; x ^= 3; x %= 3; x &= 3; x += g(); x -= g(); x /= g(); x *= g(); x >>= g(); x <<= g(); x >>>= g(); x |= g(); x ^= g(); x %= g(); x &= g(); } } op_equals_right_local_var: { options = { assignments: true, evaluate: true, } input: { var x; x = (x -= 2) ^ x; x = 3 + x; x = 3 - x; x = 3 / x; x = 3 * x; x = 3 >> x; x = 3 << x; x = 3 >>> x; x = 3 | x; x = 3 ^ x; x = 3 % x; x = 3 & x; x = g() + x; x = g() - x; x = g() / x; x = g() * x; x = g() >> x; x = g() << x; x = g() >>> x; x = g() | x; x = g() ^ x; x = g() % x; x = g() & x; } expect: { var x; x = (x -= 2) ^ x; x = 3 + x; x = 3 - x; x = 3 / x; x *= 3; x = 3 >> x; x = 3 << x; x = 3 >>> x; x |= 3; x ^= 3; x = 3 % x; x &= 3; x = g() + x; x = g() - x; x = g() / x; x = g() * x; x = g() >> x; x = g() << x; x = g() >>> x; x = g() | x; x = g() ^ x; x = g() % x; x = g() & x; } } op_equals_left_global_var: { options = { assignments: true, evaluate: true, } input: { x = x + 3; x = x - 3; x = x / 3; x = x * 3; x = x >> 3; x = x << 3; x = x >>> 3; x = x | 3; x = x ^ 3; x = x % 3; x = x & 3; x = x + g(); x = x - g(); x = x / g(); x = x * g(); x = x >> g(); x = x << g(); x = x >>> g(); x = x | g(); x = x ^ g(); x = x % g(); x = x & g(); } expect: { x += 3; x -= 3; x /= 3; x *= 3; x >>= 3; x <<= 3; x >>>= 3; x |= 3; x ^= 3; x %= 3; x &= 3; x += g(); x -= g(); x /= g(); x *= g(); x >>= g(); x <<= g(); x >>>= g(); x |= g(); x ^= g(); x %= g(); x &= g(); } } op_equals_right_global_var: { options = { assignments: true, evaluate: true, } input: { x = (x -= 2) ^ x; x = 3 + x; x = 3 - x; x = 3 / x; x = 3 * x; x = 3 >> x; x = 3 << x; x = 3 >>> x; x = 3 | x; x = 3 ^ x; x = 3 % x; x = 3 & x; x = g() + x; x = g() - x; x = g() / x; x = g() * x; x = g() >> x; x = g() << x; x = g() >>> x; x = g() | x; x = g() ^ x; x = g() % x; x = g() & x; } expect: { x = (x -= 2) ^ x; x = 3 + x; x = 3 - x; x = 3 / x; x *= 3; x = 3 >> x; x = 3 << x; x = 3 >>> x; x |= 3; x ^= 3; x = 3 % x; x &= 3; x = g() + x; x = g() - x; x = g() / x; x = g() * x; x = g() >> x; x = g() << x; x = g() >>> x; x = g() | x; x = g() ^ x; x = g() % x; x = g() & x; } } increment_decrement_1: { options = { assignments: true, reduce_vars: true, } input: { console.log(function(a) { a += 1; a -= 1; return a; }(42)); } expect: { console.log(function(a){ ++a; --a; return a; }(42)); } expect_stdout: "42" } increment_decrement_2: { options = { assignments: true, passes: 2, reduce_vars: true, } input: { console.log(function(a) { a = a + 1; a = a - 1; a += 1; a -= 1; return a; }(42)); } expect: { console.log(function(a){ ++a; --a; ++a; --a; return a; }(42)); } expect_stdout: "42" } issue_3375_1: { options = { assignments: true, reduce_vars: true, } input: { function p(o) { console.log(typeof o, o); } p(function(b) { var a = b += 1; --b; return a; }("object")); } expect: { function p(o) { console.log(typeof o, o); } p(function(b) { var a = b += 1; --b; return a; }("object")); } expect_stdout: "string object1" } issue_3375_2: { options = { assignments: true, reduce_vars: true, } input: { function p(o) { console.log(typeof o, o); } p(function(b) { var a = b -= 1; --b; return a; }("object")); } expect: { function p(o) { console.log(typeof o, o); } p(function(b) { var a = --b; --b; return a; }("object")); } expect_stdout: "number NaN" } issue_3427: { options = { assignments: true, sequences: true, side_effects: true, unused: true, } input: { (function() { var a; a || (a = {}); })(); } expect: {} } issue_3429_1: { options = { assignments: true, side_effects: true, unused: true, } input: { var a = "PASS"; (function(b) { b && (b = a = "FAIL"); })(); console.log(a); } expect: { var a = "PASS"; (function(b) { b = b && (a = "FAIL"); })(); console.log(a); } expect_stdout: "PASS" } issue_3429_2: { options = { assignments: true, side_effects: true, unused: true, } input: { var a; (function(b) { b || (b = a = "FAIL"); })(42); console.log(a); } expect: { var a; (function(b) { b = b || (a = "FAIL"); })(42); console.log(a); } expect_stdout: "undefined" } issue_3949_1: { options = { assignments: true, evaluate: true, reduce_vars: true, } input: { var a = 42; function f() { var b = a; b = b >> 2; return 100 + b; } console.log(f()); } expect: { var a = 42; function f() { var b = a; b >>= 2; return 100 + b; } console.log(f()); } expect_stdout: "110" } issue_3949_2: { options = { assignments: true, evaluate: true, reduce_vars: true, } input: { var a = 42; function f() { var b = a; b = 5 & b; return 100 + b; } console.log(f()); } expect: { var a = 42; function f() { var b = a; b &= 5; return 100 + b; } console.log(f()); } expect_stdout: "100" } issue_4521: { options = { assignments: true, dead_code: true, } input: { var a = (a = 42 | a) ? console.log(a) : 0; } expect: { var a = (a |= 42) ? console.log(a) : 0; } expect_stdout: "42" } logical_assignments: { input: { var a = 42, b = null, c; a &&= "foo"; b ||= "bar"; c ??= "baz"; console.log(a, b, c); } expect_exact: 'var a=42,b=null,c;a&&="foo";b||="bar";c??="baz";console.log(a,b,c);' expect_stdout: "foo bar baz" node_version: ">=15" } logical_collapse_vars: { options = { collapse_vars: true, } input: { var a = "FAIL", b = false; a = "PASS"; b ??= a; console.log(a); } expect: { var a = "FAIL", b = false; a = "PASS"; b ??= a; console.log(a); } expect_stdout: "PASS" node_version: ">=15" } logical_reduce_vars: { options = { evaluate: true, reduce_vars: true, toplevel: true, unused: true, } input: { var a = "PASS", b = 42; b ??= a = "FAIL"; console.log(a); } expect: { var a = "PASS", b = 42; b ??= a = "FAIL"; console.log(a); } expect_stdout: "PASS" node_version: ">=15" } logical_side_effects: { options = { side_effects: true, toplevel: true, unused: true, } input: { var a = "PASS", b = 42; b ??= a = "FAIL"; console.log(a); } expect: { var a = "PASS", b = 42; b ??= a = "FAIL"; console.log(a); } expect_stdout: "PASS" node_version: ">=15" } issue_4815_1: { options = { evaluate: true, reduce_vars: true, toplevel: true, unused: true, } input: { var a = "PASS"; 42..p &&= a = "FAIL"; console.log(a); } expect: { var a = "PASS"; 42..p &&= a = "FAIL"; console.log(a); } expect_stdout: "PASS" node_version: ">=15" } issue_4815_2: { options = { pure_getters: "strict", side_effects: true, } input: { var a = "PASS"; 42..p &&= a = "FAIL"; console.log(a); } expect: { var a = "PASS"; 42..p &&= a = "FAIL"; console.log(a); } expect_stdout: "PASS" node_version: ">=15" } issue_4819: { options = { comparisons: true, } input: { console.log(void 0 === ([].p &&= 42)); } expect: { console.log(void 0 === ([].p &&= 42)); } expect_stdout: "true" node_version: ">=15" }