if (ref.scope.uses_eval || ref.scope.uses_with) break;
// Constant single use vars can be replaced in any scope.
- if (var_decl.value.is_constant(compressor)) {
+ if (!(var_decl.value instanceof AST_RegExp) && var_decl.value.is_constant(compressor)) {
var ctt = new TreeTransformer(function(node) {
if (node === ref)
return replace_var(node, ctt.parent(), true);
}
}
+collapse_vars_regexp: {
+ options = {
+ collapse_vars: true,
+ loops: false,
+ sequences: true,
+ dead_code: true,
+ conditionals: true,
+ comparisons: true,
+ evaluate: true,
+ booleans: true,
+ unused: true,
+ hoist_funs: true,
+ keep_fargs: true,
+ if_return: true,
+ join_vars: true,
+ cascade: true,
+ side_effects: true,
+ }
+ input: {
+ function f1() {
+ var k = 9;
+ var rx = /[A-Z]+/;
+ return [rx, k];
+ }
+ function f2() {
+ var rx = /[abc123]+/;
+ return function(s) {
+ return rx.exec(s);
+ };
+ }
+ (function(){
+ var result;
+ var s = 'acdabcdeabbb';
+ var rx = /ab*/g;
+ while (result = rx.exec(s)) {
+ console.log(result[0]);
+ }
+ })();
+ }
+ expect: {
+ function f1() {
+ return [/[A-Z]+/, 9];
+ }
+ function f2() {
+ var rx = /[abc123]+/;
+ return function(s) {
+ return rx.exec(s);
+ };
+ }
+ (function(){
+ var result, rx = /ab*/g;
+ while (result = rx.exec('acdabcdeabbb'))
+ console.log(result[0]);
+ })();
+ }
+}