Symbol minification (#2695)

* minify

* Update renamer.zig

* --minify-whitespace

* Speed up minification a little

* handle private names

* 5% faster minification

* use helper function

* fix nested scope slots

* `bun build --minify` gets another +8% faster

* print semicolons afterwards

* print semicolon after checking error

* after all error checking

* Delete code for generating legacy bundes

* remove extra whitespace around if statements

* print space before import identifier

* Use `@constCast`

* Make `S.Local#decls` use `BabyList(Decl)`

* Add `fromSlice` helper to `BabyList`

* Remove unnecessary optional chains

* minify `undefined, true, false`

* Another @constCast

* Implement merge adjacent local var

* Support --minify in `bun build --transform`

* skip comments when counting character frequencies

* Don't wrap commonjs with --transform on (unless targeting bun)

* Support --minify in the runtime

* Fix edgecase with import * as

* don't infinite loop

* --trnasform shouldn't mess with require

* Only track comments when minifying

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/options.zig b/src/options.zig
index 4d03e8abf..48b580746 100644
--- a/src/options.zig
+++ b/src/options.zig
@@ -1375,6 +1375,7 @@ pub const BundleOptions = struct {
     env: Env = Env{},
     transform_options: Api.TransformOptions,
     polyfill_node_globals: bool = true,
+    transform_only: bool = false,
 
     rewrite_jest_for_tests: bool = false,
 
@@ -1395,6 +1396,7 @@ pub const BundleOptions = struct {
     inlining: bool = false,
     minify_whitespace: bool = false,
     minify_syntax: bool = false,
+    minify_identifiers: bool = false,
 
     /// This is a list of packages which even when require() is used, we will
     /// instead convert to ESM import statements.