feat(minifier): compress /* @__PURE__ */ a() ? b : b to b
#9410
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~~blocked by #9411~~
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## [0.54.0] - 2025-03-04 - 098f652 codegen: [**BREAKING**] Add `CommentAnnotation` to avoid parsing comments again (#9506) (Boshen) - a8d1d48 parser,codegen: [**BREAKING**] Parse and print`#__NO_SIDE_EFFECTS__` (#9496) (Boshen) - 355a4db napi/parser: [**BREAKING**] Remove `parse_without_return` API (#9455) (Boshen) - a5cde10 visit_ast: [**BREAKING**] Add `oxc_visit_ast` crate (#9428) (Boshen) - abb15e0 ast: [**BREAKING**] Add `pure` field to `Function`, `CallExpression`, and `NewExpression` (#9207) (overlookmotel) ### Features - a9f0d2b ast_tools: Generate field offset assertions for more types (#9449) (overlookmotel) - 64f4a82 ecmascript: Handle pure call expression in chain expressions (#9480) (sapphi-red) - 32139d2 ecmascript: Support `/* @__PURE__ */` in may_have_side_effects (#9409) (sapphi-red) - f5453f6 minifier: Flatten spread args in new expressions (#9512) (sapphi-red) - f8073f3 minifier: Support if with side effects in dead code elimination (#9502) (sapphi-red) - 10eb8f7 minifier: Use `remove_unused_expression` in `try_fold_sequence_expression` in `remove_dead_code` (#9467) (sapphi-red) - 70916db minifier: Remove unused expression in for init and update (#9466) (sapphi-red) - 26fde56 minifier: Inline simple IIFEs in `remove_unused_expression` (#9465) (sapphi-red) - ec2193e minifier: Support extracting arguments in pure calls in `remove_unused_expression` (#9463) (sapphi-red) - 007051c minifier: Compress `a != null && a.b()` to `a?.b()` in `remove_unused_expression` (#9459) (sapphi-red) - 50fce20 minifier: Support binary expression in `remove_unused_expression` (#9456) (sapphi-red) - ed9ede3 minifier: Support conditional expression in `remove_unused_expression` (#9432) (sapphi-red) - 3520538 minifier: Support object expression in `remove_unused_expression` (#9430) (sapphi-red) - fb8a93d minifier: Improve array expression handling in `remove_unused_expression` (#9427) (sapphi-red) - ff477cd minifier: Support template literals in `remove_unused_expression` (#9426) (sapphi-red) - 0d26113 minifier: Compress `/* @__PURE__ */ a() ? b : b` to `b` (#9410) (sapphi-red) - 68c77c8 napi/parser: Return semantic errors (#9460) (Boshen) - 7d7f16c parser: Apply pure to rhs of binary expression (#9492) (Boshen) - 2a08b14 parser: Support V8 intrinsics (#9379) (injuly) - 9b7017c parser,codegen: Pure annotations (#9351) (Boshen) - aa06932 transformer: Support `ModuleRunnerTransform` (#9371) (Dunqing) ### Bug Fixes - 75f06ad codegen: Do not print comments when only `annotation_comments` is enabled (#9518) (Dunqing) - f5bbd5d ecmascript: Fix toString for negative numbers (#9508) (sapphi-red) - d2cd975 ecmascript: Fix may_have_side_effects for `${a() === b}` (#9478) (sapphi-red) - 584d847 ecmascript: Objects passed to template literals may have side effects (#9425) (sapphi-red) - b371fdc estree/ast: Camel-case `typeAnnotation` field (#9420) (overlookmotel) - 1fff993 minifier: Correctly remove dead code in `try` with `finally` (#9503) (sapphi-red) - 0b96ebe minifier: Don't inline IIFE with parameters (#9477) (sapphi-red) - 071c84c minifier: Skip `try_fold_stmt_in_boolean_context` on `ExpressionStatement` (#9458) (sapphi-red) - 306284d minifier: Call mark_current_function_as_changed in remove_unused_expression (#9457) (sapphi-red) - 9c6ae9f parser: `@__NO_SIDE_EFFECTS` only affects const variable decl (#9517) (Boshen) - b7d5513 parser: Parse `@__NO_SIDE_EFFECTS__` between `export default` and `async function` (#9514) (Boshen) - 01de74c parser: Correctly fail parsing when parsing `foo.bar?.` (#9499) (camc314) - 58defe3 parser: Mark expression as pure in chain expression (#9479) (sapphi-red) - 2a03689 parser: Mark expressions on the left side of logical and conditional expressions as pure (#9414) (sapphi-red) - 7fde233 transformer/legacy-decorator: Incorrect check for potentially non-existent ident (#9491) (Dunqing) - b4f050c transformer/legacy-decorator: Metadata incorrectly wrapped by decorateParam (#9490) (Dunqing) - 5f67fa9 transformer/optional-chaning: Keep `this` when transforming `this.f?.()` (#9505) (camc314) ### Performance - 10e4431 ast/estree: Skip escaping identifiers (#9398) (overlookmotel) - b0a0a82 ast/estree: Reduce overhead serializing static strings (#9396) (overlookmotel) - 27a8e50 isolated_declarations: Reserve sufficient capacity in statements `Vec` (#9394) (overlookmotel) ### Refactor - 8916335 ast/estree: Convert enums with converters on variants (#9438) (overlookmotel) - dcff40c ast_tools: Generate layout assertions in multiple crates (#9448) (overlookmotel) - 19c4835 codegen: Simplify printing comments between arguments in call-like expressions (#9501) (Dunqing) - c880481 isolated_declarations: Rename var (#9390) (overlookmotel) - 37e41f0 isolated_declarations: Use aliases `ArenaBox` / `ArenaVec` (#9389) (overlookmotel) - bbb450c minifier: Move `a != null && b` -> `a ?? b` compression to `remove_unused_expression` (#9468) (sapphi-red) - b93774c minifier: Move `try_fold_iife` to `remove_unused_expression` (#9464) (sapphi-red) - 96a9719 minifier: Use `may_have_side_effects` in `remove_unused_expression` (#9413) (sapphi-red) ### Testing - c187b11 ecmascript: Add comments and tests for cases where `ToPropertyKey` throws an error (#9429) (sapphi-red) - d129055 napi: Add tests for worker threads (#9408) (Boshen) - 48d51e3 napi: Add tests for `hashbang` field (#9386) (overlookmotel) Co-authored-by: Boshen <[email protected]>
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blocked by #9411