fix(formatter): drop blank line between terminal call and first chain member#19659
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… member (#19659) ## Summary - Fix blank line handling between a terminal base call (like `fn()`) and the first chain member (like `.c1()`) to match Prettier's behavior - Add early return in `needs_empty_line_before()` to skip blank line detection when the object before the dot is a terminal call (callee is not part of the chain) **Before:** ```js // Input: fn()\n\n.c1() const x = fn() .c1(); ``` **After (matches Prettier):** ```js const x = fn().c1(); ``` Fixes #19469 ## Test plan - [x] Added test fixtures for both cases from the issue - [x] All 191 formatter unit tests pass - [x] All Prettier conformance tests pass (746/753 JS, 591/601 TS — unchanged) - [x] Clippy clean 🤖 Generated with [Claude Code](https://claude.com/claude-code)
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# Oxlint ### 🚀 Features - 2e0e1d0 linter/no-unused-vars: Add experimental fix mode controls (off|suggestion|fix) (#19774) (camc314) - f34f6fa linter: Introduce typeCheck config option (#19764) (camc314) - 694be7d linter: Introduce typeAware as config options (#19614) (camc314) - 655c38f semantic: Add "did you mean?" suggestions to undefined name errors (#19102) (copilot-swe-agent) - e97a57e linter/id-length: Use serde to deserialize rule options (#19636) (camc314) - c4a3677 parser: Report error for initializer in ambient context (#19187) (camc314) - 346045a linter/id-length: Add `checkGeneric` option (#19634) (camc314) ### 🐛 Bug Fixes - 1b7a937 linter: Correct double-comparisons fix with swapped operands (#19846) (camc314) - c308857 linter/consistent_type_imports: Add missing help and notes to diagnostics (#19827) (Daniel Osmond) - 7682e5a linter/plugins: Decode escapes in identifier tokens (#19838) (overlookmotel) - f368fcd linter/consistent_type_assertions: Add missing with_help and with_note to diagnostics (#19826) (Daniel Osmond) - 04e6223 npm: Add `preferUnplugged` for Yarn PnP compatibility (#19829) (Boshen) - 86d5037 linter: Add help text to no-extend-native, no-useless-backreference (#19733) (Anthony Amaro) - 50e8eff linter: Add .with_help() to operator-assignment, no-nonoctal-decimal-escape (#19732) (Anthony Amaro) - 1417bdc linter/no-wrapper-object-types: Add help messages to missing diagnostics (#19771) (Daniel Osmond) - 0838477 linter/ban_ts_comment: Add help and notes to missing diagnostics (#19781) (Daniel Osmond) - e8c77cf linter/adjacent_overload_signatures: Add missing diagnostics (#19780) (Daniel Osmond) - 28834ac linter/ban_types: Add missing help and note to diagnostics (#19782) (Daniel Osmond) - fd938d3 linter/prefer-enum-initializers: Add help messages to missing diagnostics (#19772) (Daniel Osmond) - eb928ee linter/no-dynamic-delete: Add help messages to missing diagnostics (#19768) (Daniel Osmond) - a985666 linter/no-empty-interface: Add help messages to missing diagnostics (#19769) (Daniel Osmond) - 2dc0ceb linter/no-extra-non-null-assertion: Add help messages to missing diagnostics (#19770) (Daniel Osmond) - 95d5d66 linter/no-dupe-keys: Handle `__proto__` proto setters in (#19762) (camc314) - 24ff0db linter/exhaustive-deps: False positive for member expressions in IIFEs (#19751) (Dennis Chen) - 7243a58 linter/no-use-before-define: Honor `ignoreTypeReferences` when value and type name collisions (#19747) (Dimava) - eefd818 linter/explicit-module-boundary-types: Add help messages to missing diagnostics (#19736) (Daniel Osmond) - 0440e9a linter: Add help text to no_control_regex, no_fallthrough, no_param_reassign (#19655) (Anthony Amaro) - e84cb2f react/display-name: Handle merged type+value context symbols (#19608) (camc314) - ce7e253 linter/prefer-object-from-entries: Require exact path match in unicorn helper (#19687) (camc314) - f5694ce estree/tokens: Reverse field order of `regex` object in tokens (#19679) (overlookmotel) - b2b7a55 estree/tokens: Generate tokens for files with BOM (#19535) (overlookmotel) - 0722721 linter/jsx-curly-brace-presence: False positive with prop & mixed quotes (#19674) (camc314) - 3496acd linter: Enhance diagnostic help messages for eslint rules (#19653) (Anthony Amaro) - e384e94 linter: Enhance help diagnostic messages for more eslint rules (#19658) (Anthony Amaro) - a4d5b34 linter: Avoid non-promise catch false positives (#19574) (camc314) - 5706f38 linter: `unicorn/no-array-callback-reference` skip `Effect.*` array-like methods name. (#19633) (Said Atrahouch) ### ⚡ Performance - 05ccf9f linter/plugins: Transfer tokens via raw transfer (#19893) (overlookmotel) - 4b0611a estree/tokens: Introduce `ESTreeTokenConfig` trait (#19842) (overlookmotel) - ec88f6a estree/tokens: Serialize tokens while visiting AST (#19726) (overlookmotel) - d4dcf26 linter/plugins: Remove `typescript` from bundle (#19531) (overlookmotel) - 6a6513c linter/plugins: Use Oxc tokens in plugins (#19498) (camc314) ### 📚 Documentation - d86f59e linter: Improve docs for no-useless-concat, mark as pending fixer. (#19859) (connorshea) - caa091d linter/plugins: Correct doc comments for `initTokens` (#19530) (overlookmotel) - 2fa936f README.md: Map npm package links to npmx.dev (#19666) (Boshen) - dc0ff73 linter/no-useless-constructor: Warn for parameter properties as well (#19638) (Ole Asteo) # Oxfmt ### 🚀 Features - 5141bc2 formatter: Support trailing ignore comments (#19304) (Andreas Lubbe) - 4888a99 oxfmt/lsp: Support other schemes beside `file://` and `untitled://` (#19872) (Sysix) - 14a0181 oxfmt: Support `graphql()` variant for gql-in-js (#19703) (leaysgur) - ca68ea6 oxfmt: Support gql-in-js substitution (#19670) (leaysgur) - 035933c formatter,oxfmt: Support js-in-vue (partially) (#19514) (leaysgur) - 9e11dc6 parser,estree,coverage: Collect tokens in parser and convert to ESTree format (#19497) (camc314) ### 🐛 Bug Fixes - 8e3842d oxfmt: Avoid embedded TSFN crash by returning errors as data (take2) (#19806) (Yuji Sugiura) - 04e6223 npm: Add `preferUnplugged` for Yarn PnP compatibility (#19829) (Boshen) - e540585 oxfmt: Support tailwind sort for CSS/LESS/SCSS (#19803) (leaysgur) - 93bb861 formatter: Trim trailing whitespace before breaking line (#19740) (leaysgur) - b85f97b formatter: Drop blank line between terminal call and first chain member (#19659) (Dunqing) ### ⚡ Performance - b3b2d30 parser: Introduce `ParserConfig` (#19637) (overlookmotel) ### 📚 Documentation - 2fa936f README.md: Map npm package links to npmx.dev (#19666) (Boshen) Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
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Summary
fn()) and the first chain member (like.c1()) to match Prettier's behaviorneeds_empty_line_before()to skip blank line detection when the object before the dot is a terminal call (callee is not part of the chain)Before:
After (matches Prettier):
Fixes #19469
Test plan
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