test(es/minifier): Organize terser tests (#6247)

crates/swc_ecma_minifier/tests/TODO.txt

@@ -21,7 +21,6 @@ collapse_vars/chained_1/input.js
 collapse_vars/chained_2/input.js
 collapse_vars/chained_3/input.js
 collapse_vars/collapse_vars_arguments/input.js
-collapse_vars/collapse_vars_assignment/input.js
 collapse_vars/collapse_vars_constants/input.js
 collapse_vars/collapse_vars_do_while/input.js
 collapse_vars/collapse_vars_do_while_drop_assign/input.js
@@ -34,7 +33,6 @@ collapse_vars/collapse_vars_short_circuit/input.js
 collapse_vars/collapse_vars_short_circuited_conditions/input.js
 collapse_vars/collapse_vars_side_effects_1/input.js
 collapse_vars/collapse_vars_switch/input.js
-collapse_vars/collapse_vars_unary/input.js
 collapse_vars/cond_branch_1/input.js
 collapse_vars/cond_branch_2/input.js
 collapse_vars/double_def_1/input.js
@@ -72,8 +70,6 @@ collapse_vars/switch_case_1/input.js
 collapse_vars/toplevel_single_reference/input.js
 collapse_vars/undeclared/input.js
 collapse_vars/unused_orig/input.js
-collapse_vars/var_defs/input.js
-collapse_vars/var_side_effects_2/input.js
 conditionals/equality_conditionals_false/input.js
 conditionals/ifs_5/input.js
 conditionals/ifs_6/input.js

crates/swc_ecma_minifier/tests/passing.txt

@@ -146,6 +146,7 @@ collapse_vars/collapse_rhs_undefined/input.js
 collapse_vars/collapse_rhs_var/input.js
 collapse_vars/collapse_rhs_vardef/input.js
 collapse_vars/collapse_vars_array/input.js
+collapse_vars/collapse_vars_assignment/input.js
 collapse_vars/collapse_vars_closures/input.js
 collapse_vars/collapse_vars_eval_and_with/input.js
 collapse_vars/collapse_vars_issue_721/input.js
@@ -157,6 +158,7 @@ collapse_vars/collapse_vars_seq/input.js
 collapse_vars/collapse_vars_side_effects_2/input.js
 collapse_vars/collapse_vars_throw/input.js
 collapse_vars/collapse_vars_try/input.js
+collapse_vars/collapse_vars_unary/input.js
 collapse_vars/collapse_vars_unary_2/input.js
 collapse_vars/collapse_vars_while/input.js
 collapse_vars/compound_assignment/input.js
@@ -246,7 +248,9 @@ collapse_vars/side_effects_property/input.js
 collapse_vars/switch_case_2/input.js
 collapse_vars/switch_case_3/input.js
 collapse_vars/unsafe_builtin/input.js
+collapse_vars/var_defs/input.js
 collapse_vars/var_side_effects_1/input.js
+collapse_vars/var_side_effects_2/input.js
 collapse_vars/var_side_effects_3/input.js
 comments/comment_moved_between_return_and_value/input.js
 comments/preserve_comments_by_default/input.js

crates/swc_ecma_minifier/tests/terser/compress/collapse_vars/collapse_vars_assignment/output.js

@@ -2,27 +2,25 @@ function log(x) {
     return console.log(x), x;
 }
 function f0(c) {
-    var a = 3 / c;
-    return (a = a);
+    return 3 / c;
 }
 function f1(c) {
     return 1 - 3 / c;
 }
 function f2(c) {
-    return log((c = 3 / c - 7));
+    return log(c = 3 / c - 7);
 }
 function f3(c) {
-    return log((c |= 3 / c - 7));
+    var a = 3 / c;
+    return log(c |= a - 7);
 }
 function f4(c) {
-    var b = 2;
-    return log((b += 3 / c));
+    return log(2 + 3 / c);
 }
 function f5(c) {
-    var b = 2;
-    return log((b += 3 / c));
+    return log(2 + 3 / c);
 }
 function f6(c) {
     var b = g();
-    return log((b += 3 / c));
+    return log(b += 3 / c);
 }

crates/swc_ecma_minifier/tests/terser/compress/collapse_vars/collapse_vars_unary/output.js

@@ -1,6 +1,5 @@
 function f0(o, p) {
-    var x = o[p];
-    return delete x;
+    return o[p], !0;
 }
 function f1(n) {
     return n > +!!n;

crates/swc_ecma_minifier/tests/terser/compress/collapse_vars/var_defs/output.js

@@ -1,7 +1,5 @@
-var f1 = function (x, y) {
-    var r = x + y,
-        a = r * r - r,
-        b = 7;
-    console.log(a + b);
+var f1 = function(x, y) {
+    var r = x + y;
+    console.log(r * r - r + 7);
 };
 f1("1", 0);

crates/swc_ecma_minifier/tests/terser/compress/collapse_vars/var_side_effects_2/output.js

@@ -1,6 +1,7 @@
 var print = console.log.bind(console);
 function foo(x) {
-    var twice = 2 * x.y;
-    print("Foo:", twice);
+    print("Foo:", 2 * x.y);
 }
-foo({ y: 10 });
+foo({
+    y: 10
+});