Abort esbuild if stdin is closed when serving #1449
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Thanks for the PR. I wanted to give you a heads up that I'm moving across the country this week and so will probably not have time to look at this (or anything related to esbuild) until some time after my move. Probably sometime next week instead. But I've seen this and I agree it will be good to fix. It's on my list of things to look into as soon as I get time after my move. |
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I just looked into this a little. Here are some other issues for reference:
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Good summary! I had forgotten why Brunch introduced a separate flag for listening to stdin but one of your links resurfaced the reason: if you wait for stdin to be closed then it can no longer run as a background process. That sounds like a fair use case, so I would be glad to gate this feature behind an option if you prefer! |
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I'd like to avoid adding a flag for this. Right now I'm thinking of trying to only monitor stdin when it's not a TTY. That should keep the ability to use esbuild as a background process while hopefully also enabling the Erlang VM child process scenario without a flag. The only thing it won't enable is letting you use Ctrl+D to stop watch mode but you can just do Ctrl+C instead so that doesn't seem important. Can you confirm that the previous commit works with the Erlang VM in the way that you wanted? |
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@evanw nice solution! It worked as expected, thank you! ❤️ |
eduardoboucas
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Dec 3, 2021
* fix evanw#1327: improve lowered template literals * fix(linker): order of css imported from js (evanw#1342) * release notes for evanw#1342 * update compat-table * fix for "export default class" transform (evanw#1346) * publish 0.12.6 to npm * add support for es5-style identifiers (evanw#1349) * runtime: remove "__platform" flag * runtime: remove "__profiler" flag * runtime: check "for-of" not "=>" for es6 support * fix evanw#1349: quote modern unicode object properties * fix evanw#1355: ignore tsconfig.json in node_modules * fix evanw#1357: "--metafile" with "--watch" * fix(linker): add missing esm flag (evanw#1338) * Allow OnResolve plugins to mark modules as side effect free (evanw#1313) * publish 0.12.7 to npm * fix evanw#1358: remove warning about source map comment * publish 0.12.8 to npm * fix evanw#1361: allow "this" with "--define" * fix evanw#1372: css minification bug with !important * publish 0.12.9 to npm * avoid checking "browser" for other platforms * add an "es2021" target * Avoid exporting a pointer to a loop variable in linker (evanw#1389) The Bazel nogo (Go lint config) errored when I tried to compile esbuild: compilepkg: nogo: errors found by nogo during build-time code analysis: external/com_github_evanw_esbuild/internal/bundler/linker.go:3309:27: exporting a pointer for the loop variable stmt (export_loop_ref) The simplified code nogo complains about is: for _, stmt := range partStmts { stmt.Data = &js_ast.SImport{ StarNameLoc: &stmt.Loc, } } The problem is `&stmt.Loc` points to the mutated loop variable `stmt`. After the loop iteration ends, all stored pointers will point to the last value of `partStmts[-1].Loc`. An alternative solution is to shadow `stmt` at the beginning of the loop, but this felt cleaner: stmt := stmt The lint rule is defined by https://github.com/kyoh86/exportloopref. * feat: mangle Infinity (evanw#1385) * add support for shorten transform/translate3d (evanw#1390) * css: implement minification for all matrix forms * fix evanw#1397: support "s" in css attribute selectors * publish 0.12.10 to npm * fix evanw#1399: avoid "os.MkdirAll" to fix WebAssembly * fix evanw#1396: improve invalid loader error message * improve sync performance of js api by ~20x (evanw#1000) * fix windows issues * publish 0.12.11 to npm * move unique key prefix from compile to scan phase * add "C" to unique keys for chunks * fix evanw#1044: correct relative paths for file loader * fix a windows path issue * publish 0.12.12 to npm * Fix using JS synchronous API from from non-main threads (evanw#1411) * publish 0.12.13 to npm * keep wasm tests self-contained * factor out some code related to "outfile" * pull out relative-to-outbase code * fix evanw#1404: "file" loader always copies to "outdir" * publish 0.12.14 to npm * fix evanw#1421: bug with css color lowering and "var()" * avoid "var()" issues with other css minifications * publish 0.12.15 to npm * update the compat table * allow out-of-range tagged template unicode escapes * fix evanw#1426: remove warning about bad CSS "@" rules * fix evanw#1470: allow "ES2021" in "tsconfig.json" * fix evanw#1462: avoid worker_threads in node <v12.17.0 * fix evanw#1466: paths with "node:" prefix are external * Consider `\` and `/` to be the same in file paths (evanw#1472) * publish 0.12.16 to npm * fix evanw#1455: bundler hoisting bug with var+for loops * fix evanw#1418: private fields and logical assignment * Abort esbuild if stdin is closed when serving (evanw#1449) * release notes for evanw#1449 * fix evanw#1424: always generate private method names * publish 0.12.17 to npm * fix evanw#1483: UTF-8 and utf-8 are the same @charset * improve error about missing sub-condition (evanw#1484) * refactor(deno): use denoflate instead of compress (evanw#1482) deno.land/x/denoflate is about 10% smaller, and a lot more polished and up to date than deno.land/x/compress. * fix evanw#1493: nullish coalescing assignment edge case * fix evanw#1489: do not warn about "es3" in node_modules * fix evanw#1497: "this" before "super()" when minifying * avoid shadowing "expr" in "lowerClass" * fix evanw#1498: variable shadowing broke class lowering * fix: CSS import relative paths (evanw#1494) * add release notes for evanw#1494 * publish 0.12.18 to npm * move source map code to source map module * css: add location info to rules * css: printer returns result object * move span object to logger * css: add support for source maps * add extension to source map tests * add a basic css source map test * fix evanw#519: release notes for css source maps * fix evanw#1507: wrong ts class field side effect order * publish 0.12.19 to npm * avoid printing "</style" in CSS code (evanw#1509) * attempt to fix flaky test * update browser compat data * fix evanw#1512: asi issue with "." and type parameters * fix evanw#1509: make `</script` escape case-insensitive * publish 0.12.20 to npm * update to go version 1.17.0 * fix evanw#995: windows arm64 support * run go format from go 1.17.0 * css: terminate source map comment before "*/" * add windows 64-bit arm build to installer (evanw#995) * publish 0.12.21 to npm * fix evanw#1536: http range requests now use less memory * fix evanw#1538: minify bug for "var()" and "box-shadow" * publish 0.12.22 to npm * fix evanw#1553: rest bindings in TypeScript arrow types * fix evanw#1545: "watch" is not allowed with "buildSync" * fix evanw#1552: keep names + minify + nested functions * forbid "watch" w/ "buildSync" w/o "worker_threads" * publish 0.12.23 to npm * fix direct "eval" variable renaming edge case * publish 0.12.24 to npm * fix evanw#1560: bug with "!" after "new" in TypeScript * capture and report parser panics * fix parser panic due to "#a in #b in c" * class static blocks are a parse error * illumos 64-bit support (evanw#1562) * release notes for evanw#1562 * publish 0.12.25 to npm * feat: Optimizing the __require function (evanw#1580) * release notes for evanw#1579 * move "NO_COLOR" handling into the logger itself * add an "analyze metafile" api * add import paths to analysis * add a "verbose" flag to analysis * fix evanw#1568: release notes for "--analyze" * upgrade "golang.org/x/sys" (evanw#1572) * publish 0.12.26 to npm * fix evanw#1594: update manual compat table overrides * replace math.MaxInt usage (evanw#1585) This constant is only available in go >= 1.17, so I've inlined its value so dependents don't have to upgrade their go version. reference implementation: https://cs.opensource.google/go/go/+/refs/tags/go1.17:src/math/const.go;l=38 * fix evanw#1589: server "stop()" waits for active builds * use "math.MaxUint32" not "math.MaxInt" * update go 1.17.0 => go 1.17.1 * publish 0.12.27 to npm * fix evanw#1599: U+30FB and U+FF65 in ES5 vs. ES6+ * fix evanw#1600: "++" and "--" on class private fields * publish 0.12.28 to npm * fix evanw#1614: proxy from "__require" to "require" * fix evanw#1623: ignore class fields marked "abstract" * "typeof identifier" has no side effects * fix "__require" to have no side effects * fix mangle syntax edge case with "==" and "!=" * fix missing return in "IsNumericValue" * add "--analyze" to cli help text * publish 0.12.29 to npm * no side effects for "typeof x != undefined && x" * separate "ignore annotations" from "tree shaking" (evanw#1625) * install using "optionalDependencies" (evanw#1621) * release notes * publish 0.13.0 to npm * fix release gh action to ignore nested headers * fix the "esbuild" package in yarn 2+ * yarn pnp compat: copy binary into the current pkg * publish 0.13.1 to npm * fix evanw#1628: "export {}" with "--tree-shaking=true" * fix cache condition in iswin_wasm (evanw#1630) * publish 0.13.2 to npm * add "preferUnplugged: false" to binary packages This is a yarn-specific "package.json" flag and is being added at the recommendation of the Yarn team. Even though esbuild's binary packages are listed as optional dependencies of the main package, Yarn still installs all of them (even though only one applies to the current platform). And unlike npm, which always installs a given package into a directory on the file system, Yarn can represent a given package either as a zip file or as a directory of files. So ideally as many packages as possible are represented as zip files to minimize wasted space on the file system (since zip files are compressed). One of the heuristics that Yarn uses is to represent a package as a directory if it contains a file ending in ".exe" so unfortunately esbuild's three Windows packages are always stored as directories instead of as zip files, which means they are uncompressed and are larger than necessary. Specifying "preferUnplugged: false" should avoid this. Hopefully someday Yarn won't even install these packages on the file system in the first place to eliminate the wasted space completely. See also: * https://yarnpkg.com/configuration/manifest/#preferUnplugged * yarnpkg/berry#3317 (comment) * support type-only import/export specifiers (evanw#1637) * publish 0.13.3 to npm * fix evanw#1642: permission issues with install script * basic support for ".mts" and ".cts" from TS 4.5 * fix evanw#1647: add a fallback for "npm --no-optional" * make pnpapi workaround platform-specific (evanw#1656) I'm not sure if this will fix anything, but it probably couldn't hurt. * no optimizations with yarn 1 just in case (evanw#1656) * fix evanw#1657: invalid css transform of margin/padding * remove ".mts" and ".cts" from resolve extensions * publish 0.13.4 to npm * fix evanw#1113: improve watch mode accuracy (evanw#1676) * disallow certain "<" in ".mts/.cts" files * fix evanw#1665: don’t remove empty @Keyframes (evanw#1669) * release notes for evanw#1665 * Don't emit "duplicate label" error across function scopes. (evanw#1671) * release notes for evanw#1671 * publish 0.13.5 to npm * Add NetBSD amd64 binary (evanw#1624) * https in changelog, rebalance makefile * Allow bundled esbuild with ESBUILD_BINARY_PATH (evanw#1678) * feat: drop catch binding when optional catch binding is supported (evanw#1660) * fix subtle minify issues with eval * ts: forbid "declare" fields from being initialized * ts: forbid "declare" on non-field class properties * fix evanw#1675: run decorators for "declare" fields * avoid direct eval retaining unused imports in ts * publish 0.13.6 to npm * update parcel 2 version in benchmark * remove now-unnecessary "@parcel/transformer-typescript-tsc" * remove old bundler versions * update rollup and webpack too * update benchmark image * fix evanw#1682: always use the shortest css alpha value * fix evanw#1680: match node's core module behavior * update go 1.17.1 => 1.17.2 * fix wasm on go 1.17.2 (evanw#1684) * update rollup tests so they work on node v16.11.1 * publish 0.13.7 to npm * fix evanw#1425: super inside arrow inside lowered async * add "and CSS" to package description * fix evanw#1661: remove implicit trailing "/" in "[dir]" * add a test for evanw#1362 * publish 0.13.8 to npm * fix evanw#1702: invalid css transform of border-radius * make yaml formatting consistent * add simple end-to-end tests * fix evanw#1703: handle silent "rename" syscall failure * add pnpm end-to-end tests * check end-to-end test output * resolver: rename "pe" => "pj" * remove unused range * fix evanw#1691: support "imports" in "package.json" * publish 0.13.9 to npm * yarn berry end-to-end test * try running end-to-end tests on github * check that esbuild builds on go 1.13 * Use `io.SeekStart` instead of deprecated `os.SEEK_SET` (evanw#1701) `os.SEEK_SET` has been deprecated since Go 1.7. Ref: https://pkg.go.dev/os#pkg-constants * add "check out code" to old go version ci * update @next targets for npm and yarn * link from code to docs for vs code autocomplete * remove invalid "es7" option in tsconfig parser * update the compat table * Allow target for ES-Version to be uppercase (evanw#1718) * fix evanw#1539: implement legal comments for css * update to unicode 14 * add ".mts" and ".cts" to exports kind checking * publish 0.13.10 to npm * reorder some functions * get tests working on node 17+ * also run async transform tests un-transformed * run tests w/ node 16 not 14 to avoid hard-crash Node 14 has some bug that results in an "unreachable code" panic. For the record, the traceback is as follows: 1: node::NodePlatform::GetStackTracePrinter()::$_3::__invoke() 2: V8_Fatal(char const*, ...) 3: v8::internal::interpreter::BytecodeGenerator::VisitCompoundAssignment(v8::internal::CompoundAssignment*) 4: v8::internal::interpreter::BytecodeGenerator::VisitNoStackOverflowCheck(v8::internal::AstNode*) 5: v8::internal::interpreter::BytecodeGenerator::GenerateBytecodeBody() 6: v8::internal::interpreter::BytecodeGenerator::GenerateBytecode(unsigned long) 7: v8::internal::interpreter::InterpreterCompilationJob::ExecuteJobImpl() 8: v8::internal::(anonymous namespace)::ExecuteSingleUnoptimizedCompilationJob(v8::internal::ParseInfo*, v8::internal::FunctionLiteral*, v8::internal::AccountingAllocator*, std::__1::vector<v8::internal::FunctionLiteral*, std::__1::allocator<v8::internal::FunctionLiteral*> >*) 9: v8::internal::(anonymous namespace)::IterativelyExecuteAndFinalizeUnoptimizedCompilationJobs(v8::internal::Isolate*, v8::internal::Handle<v8::internal::SharedFunctionInfo>, v8::internal::Handle<v8::internal::Script>, v8::internal::ParseInfo*, v8::internal::AccountingAllocator*, v8::internal::IsCompiledScope*, std::__1::vector<v8::internal::FinalizeUnoptimizedCompilationData, std::__1::allocator<v8::internal::FinalizeUnoptimizedCompilationData> >*) 10: v8::internal::Compiler::Compile(v8::internal::Handle<v8::internal::SharedFunctionInfo>, v8::internal::Compiler::ClearExceptionFlag, v8::internal::IsCompiledScope*) 11: v8::internal::Compiler::Compile(v8::internal::Handle<v8::internal::JSFunction>, v8::internal::Compiler::ClearExceptionFlag, v8::internal::IsCompiledScope*) 12: v8::internal::Runtime_CompileLazy(int, unsigned long*, v8::internal::Isolate*) 13: Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit 14: Builtins_CompileLazy 15: Builtins_InterpreterEntryTrampoline * also run class lowering tests untransformed * test coverage for super and object methods * fix writing to a "super" property * also handle "super" inside static class fields * implement class static blocks (evanw#1729) * publish 0.13.11 to npm * enable tree shaking for empty "static {}" blocks * fix evanw#1730: crash with legal comment and @import * enable tree shaking of "Reflect" static methods * implement "calc()" reduction for css (evanw#1731) * publish 0.13.12 to npm * fix evanw#1739: tree shaking bug with "var exports" * border radius tests: use length instead of number * Add css to help text for --loader (evanw#1744) * allow empty string for CLI string arrays * move "main fields" logic to a separate function * make debug meta available to the entire resolver * say if "main" is missing from main fields (evanw#1754) * fix evanw#1755: merge adjacent selectors with same body * add spack to benchmarks (not ready due to bugs) * Shorten "top", "right" properties into "inset" property (evanw#1758) * add credit to changelog * publish 0.13.13 to npm * chore: make build pass * chore: update publishing scripts Co-authored-by: Evan Wallace <[email protected]> Co-authored-by: dmitrage <[email protected]> Co-authored-by: Liu Bowen <[email protected]> Co-authored-by: Chris Casola <[email protected]> Co-authored-by: Joe Schafer <[email protected]> Co-authored-by: Gusted <[email protected]> Co-authored-by: Weilin Shi <[email protected]> Co-authored-by: José Valim <[email protected]> Co-authored-by: Luca Casonato <[email protected]> Co-authored-by: Rongjian Zhang <[email protected]> Co-authored-by: Dominik Hassler <[email protected]> Co-authored-by: FM <[email protected]> Co-authored-by: David Zukowski <[email protected]> Co-authored-by: John Doe <[email protected]> Co-authored-by: Georges Varouchas <[email protected]> Co-authored-by: Pig Fang <[email protected]> Co-authored-by: Eelco Lempsink <[email protected]> Co-authored-by: Nevkontakte <[email protected]> Co-authored-by: Greg Troxel <[email protected]> Co-authored-by: Piotr Krawiec <[email protected]> Co-authored-by: 翠 / green <[email protected]> Co-authored-by: y-yagi <[email protected]> Co-authored-by: timse <[email protected]> Co-authored-by: Dan Rosén <[email protected]> Co-authored-by: Netlify Team Account 1 <[email protected]>
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Most command line tools (cat, fsevents, etc) and JS CLI watchers (postcss,
webpack, etc) listen to stdin and abort when the stdin is closed (for example,
by sending Ctrl+D). This is important because there is no guarantee the
process who invokes esbuild will terminate it, but it is guaranteed the stdin
will be closed once the parent dies.
This pull requests watches the stdin when serving and exits accordingly,
in order to provide a user convenience and avoid zombie processes.
PS1: note I chose to always enable stdin watching (postcss does the same)
but you may want to gate this behaviour behind a flag (like webpack).
PS2: I noticed that you can communicate with esbuild via stdio but I am
not sure if this communication is enabled when serving. If it is, then this
needs to be revisited.
PS3: thanks for esbuild!