return trim_block(self);
});
+ function drop_rest_farg(fn, compressor) {
+ if (!compressor.option("rests")) return;
+ if (fn.uses_arguments) return;
+ if (!(fn.rest instanceof AST_DestructuredArray)) return;
+ if (!compressor.drop_fargs(fn, compressor.parent())) return;
+ fn.argnames = fn.argnames.concat(fn.rest.elements);
+ fn.rest = null;
+ }
+
function opt_arrow(self, compressor) {
if (!compressor.option("arrows")) return self;
+ drop_rest_farg(self, compressor);
var body = tighten_body(self.value ? [ self.first_statement() ] : self.body, compressor);
switch (body.length) {
case 1:
OPT(AST_Arrow, opt_arrow);
OPT(AST_AsyncArrow, opt_arrow);
+ OPT(AST_Defun, function(self, compressor) {
+ drop_rest_farg(self, compressor);
+ self.body = tighten_body(self.body, compressor);
+ return self;
+ });
+
OPT(AST_Function, function(self, compressor) {
+ drop_rest_farg(self, compressor);
self.body = tighten_body(self.body, compressor);
if (compressor.option("inline")) for (var i = 0; i < self.body.length; i++) {
var stat = self.body[i];
return try_evaluate(compressor, self);
});
+ OPT(AST_DestructuredArray, function(self, compressor) {
+ if (compressor.option("rests") && self.rest instanceof AST_DestructuredArray) {
+ self.elements = self.elements.concat(self.rest.elements);
+ self.rest = null;
+ }
+ return self;
+ });
+
OPT(AST_DestructuredKeyVal, function(self, compressor) {
if (compressor.option("objects")) {
var key = self.key;
node_version: ">=6"
}
+drop_rest_array: {
+ options = {
+ rests: true,
+ }
+ input: {
+ var [ ...[ a ]] = [ "PASS" ];
+ console.log(a);
+ }
+ expect: {
+ var [ a ] = [ "PASS" ];
+ console.log(a);
+ }
+ expect_stdout: "PASS"
+ node_version: ">=6"
+}
+
+drop_rest_arrow: {
+ options = {
+ arrows: true,
+ keep_fargs: false,
+ reduce_vars: true,
+ rests: true,
+ }
+ input: {
+ console.log(((...[ a ]) => a)("PASS"));
+ }
+ expect: {
+ console.log((a => a)("PASS"));
+ }
+ expect_stdout: "PASS"
+ node_version: ">=6"
+}
+
+drop_rest_lambda: {
+ options = {
+ keep_fargs: false,
+ reduce_vars: true,
+ rests: true,
+ toplevel: true,
+ }
+ input: {
+ function f(...[ a ]) {
+ return a;
+ }
+ console.log(f("PASS"), f(42));
+ }
+ expect: {
+ function f(a) {
+ return a;
+ }
+ console.log(f("PASS"), f(42));
+ }
+ expect_stdout: "PASS 42"
+ node_version: ">=6"
+}
+
issue_4525_1: {
options = {
arguments: true,