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feat(parser): more friendly error for duplicate import attribute key - #28262
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…28262) The message felt a bit confusing for me. **Before** ``` × Identifier `type` has already been declared ╭─[babel/packages/babel-parser/test/fixtures/es2025/import-attributes/invalid-syntax-export-with-repeated-type/input.js:1:50] 1 │ export { default as foo } from "foo.json" with { type: "json", type: "html" }; · ──┬─ ──┬─ · │ ╰── It can not be redeclared here · ╰── `type` has already been declared here ╰──── ``` **After** ``` × Duplicate import attribute key `type` ╭─[babel/packages/babel-parser/test/fixtures/es2025/import-attributes/invalid-syntax-export-with-repeated-type/input.js:1:50] 1 │ export { default as foo } from "foo.json" with { type: "json", type: "html" }; · ──┬─ ──┬─ · │ ╰── This key is repeated · ╰── `type` was first specified here ╰──── help: Each import attribute key must be unique ```
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### 🚀 Features - 8dd67a6 transform-react: Expose TypeScript transform options (Tomas Särnhammar) - deed7dc parser: More friendly error for duplicate import attribute key (#28262) (sapphi-red) ### 🐛 Bug Fixes - eaa8e90 ecmascript: Avoid numeric `+` folding when an operand may be a string (#28544) (camc314) - b03c7b8 regular_expression: Allow incomplete oversized legacy quantifiers (#28449) (Boshen) - 128c67d semantic: Check strict eval and arguments writes by reference flags (#28445) (Boshen) - c97c43c parser: Reject TypeScript default exports in JavaScript (#28440) (Boshen) - fdd119f span: Count Unicode characters when filtering typo suggestions (#28452) (Boshen) - cb64638 regular_expression: Reject incomplete Unicode atom escapes (#28448) (Boshen) - fc0eed3 semantic: Stop let-binding scans at arrow functions (#28444) (Boshen) - 3421516 parser: Preserve default import names in reexports (#28442) (Boshen) - a1e7e5f parser: Reject optional class members in JavaScript (#28439) (Boshen) - 5b9a7bc parser: Parse sloppy let expressions and labels (#28438) (Boshen) - 8e61652 regex: Reject templates without cooked values (#28345) (Boshen) - 3b36543 parser: Preserve in-context after TypeScript type arguments (#28300) (Boshen) - 2e3126c regex: Decode constructor patterns and flags consistently (#28298) (Boshen) - 8a90be2 regex: Track capture groups and disjunction identity (#28297) (Boshen) - 3dc2cb0 regex: Preserve escape values and boundaries (#28296) (Boshen) - fc8acbc parser: Handle leading-zero numeric exponents (#28295) (Boshen) - 91a638d parser: Normalize raw template line endings with invalid escapes (#28285) (Boshen) - 2ac9a42 parser: Allow parenthesized private-in expressions (#28284) (Boshen) - 052bca9 ast: Prevent greyed out fields in AST types in IDEs (#28335) (overlookmotel) - ed7df7d ast/estree: Include comments in TS Program span (#28326) (camc314) ### ⚡ Performance - 9b6b7bf regular_expression: Advance validated Unicode escapes directly (#28514) (Boshen) - 82e1982 regular_expression: Share Unicode property name prefixes (#28513) (Boshen) - 5395a40 regular_expression: Parse class set character prefixes once (#28512) (Boshen) - 3708934 regular_expression: Defer literal range dash allocation (#28511) (Boshen) - d85ee3d semantic: Skip arguments ancestry checks outside classes (#28510) (Boshen) - cf81d07 semantic: Reuse private reference resolution (#28509) (Boshen) - a79eebc semantic: Avoid duplicate maps for public JavaScript members (#28508) (Boshen) - 235ca3b semantic: Skip escape checks for unescaped strings (#28507) (Boshen) - babf44c parser: Reuse shorthand assignment target identifiers (#28504) (Boshen) - 444f24a ecmascript: Short-circuit simple parameter checks for rest (#28503) (Boshen) - 04b20c0 semantic: Compute duplicate parameter policy once per list (#28446) (Boshen) - dbf8482 parser: Use token lookahead for simple function types (#28489) (Boshen) - bca1275 parser: Avoid unused destructuring rest capacity (#28499) (Boshen) - 691be5c parser: Compact cover initialized name storage (#28495) (Boshen) - b3b5444 parser: Build simple arrow bindings directly (#28493) (Boshen) - e1c9baf parser: Disambiguate single-identifier arrow heads (#28491) (Boshen) - 550e98a regular_expression: Avoid rescanning unique capture names (#28450) (Boshen) - 10e9fc7 parser: Skip duplicate lookup for singleton import attributes (#28441) (Boshen) - 5238839 parser: Use a stack buffer for float separators (#28435) (Boshen) - 6e35e3c parser: Fast-path leaf expressions before delimiters (#28432) (Boshen) - 3d7512c parser: Decode Unicode identifiers once (#28414) (Boshen) - 30f59f4 parser: Factor object type opening brace (#28430) (Boshen) - 028a267 parser: Always inline postfix update parsing (#28429) (Boshen) - 1b5a171 parser: Reuse export kind classification (#28424) (Boshen) - 179a432 parser: Factor return type identifier parsing (#28416) (Boshen) - 553dd1d parser: Inline hot paths and fold function dispatch (#28404) (Boshen) - de75d56 parser: Combine parenthesized arrow lookahead (#28412) (Boshen) - a768a0c parser: Reuse comment annotations after rewind (#28408) (Boshen) - 563d92a parser: Skip redundant source cursor updates (#28409) (Boshen) - 7941ca9 parser: Factor tuple identifier parsing (#28398) (Boshen) - 426c151 parser: Construct completed tokens without intermediate writes (#28291) (Boshen) - df42953 minifier: Don't request another pass for block unwrapping (#28315) (Dunqing) - c2d663d parser: Avoid vectors for single parenthesized expressions (#28374) (Boshen) - 50bd0a9 parser: Size delimited lists after the first element (#28373) (Boshen) - bd869b5 parser: Bypass redundant operand parsing (#28372) (Boshen) - 455fc09 parser: Skip keyword checks for plain identifier expressions (#28371) (Boshen) - 61303fb parser: Fast-path identifier operands (#28306) (Boshen) - 6cf5b1a parser: Guard arrow and conditional parsing (#28305) (Boshen) - 3666939 parser: Specialize identifier reference parsing (#28303) (Boshen) - 0d6641a parser: Skip inapplicable expression parsing paths (#28294) (Boshen) - 3be7997 parser: Reduce lexer search batch size (#28292) (Boshen) - ab5655a regex: Remove redundant character-class and quantifier checks (#28288) (Boshen) - ec8e8d4 parser: Remove redundant grammar and lexer checks (#28287) (Boshen) - c903f5c parser: Specialize known-token parsing (#28286) (Boshen) - 2683225 str: `static_ident!` and `static_str!` macros guarantee const evaluation (#28340) (overlookmotel) - df90836 ast: Reduce compile time of `#[ast]` macro (#28336) (overlookmotel) - 8239dac parser: Replace dragonbox_ecma with zmij_ecma (#28282) (Boshen)
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## Summary - Upgrade Oxc Rust dependencies to 0.157.0. - Upgrade @oxc-project/runtime, @oxc-project/types, oxc-parser, and oxc-transform to 0.157.0. ## Root causes ### oxc-project/oxc#28262 Duplicate import attributes now report a specific diagnostic instead of an identifier redeclaration. Regenerate the three affected Test262 snapshot messages; these inputs still fail with SyntaxError. ### oxc-project/oxc#28172 Oxc syncs its runtime helpers with Babel 8.0.8. Regenerate the embedded ESM and CommonJS helpers: eight added and thirteen changed per variant, including iterator handling, interop, and async generators. The generated version metadata and virtual module prefix also advance to 0.157.0. --------- Co-authored-by: Jerry Zhao <165626830+shulaoda@users.noreply.github.com>
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The message felt a bit confusing for me.
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After