--emitDeclarationOnly flag to enable declarations only output #20735

nojvek · 2017-12-16T19:30:31Z

Fixes Suggestion: a --noEmitJS compiler option #15158 and Can compiler only emit declaration file ? #1866. Part of fix for Allow --declaration with --allowJs #7546
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sheetalkamat · 2017-12-18T19:44:39Z

src/compiler/program.ts

+            if (options.noEmitJs && !options.declaration) {
+                programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "noEmitJs", "declaration"));
+            }
+


you would also want to skip verifyEmitFilePath(emitFileNames.jsFilePath, emitFilesSeen); down below when noEmitJs is true

nojvek · 2018-01-03T19:29:28Z

Kind ping regarding this @sheetalkamat

Should I be adding any specific devs from typescript team to this PR? What's the usual process before a PR lands in the repo ?

mhegazy · 2018-01-05T00:45:20Z

src/compiler/commandLineParser.ts

@@ -231,6 +231,13 @@ namespace ts {
            category: Diagnostics.Basic_Options,
            description: Diagnostics.Do_not_emit_outputs,
        },
+        {
+            name: "noEmitJs",


I think the name should be --emitDeclarationsOnly instead.

mhegazy · 2018-01-05T00:47:01Z

src/compiler/commandLineParser.ts

+            name: "noEmitJs",
+            type: "boolean",
+            showInSimplifiedHelpView: true,
+            category: Diagnostics.Basic_Options,


i would say this belongs into Advanced_Options

Advanced_options don't show up as part of --help or in default tsc --init. Doesn't it make sense that the option showed up there? I plan to enable allowJs + emitDeclarationsOnly in another PR which would help with lots of npm projects to auto-generate jsdoc to .d.ts declarations.

Puppeteer is one good example

mhegazy · 2018-01-05T00:47:19Z

src/compiler/diagnosticMessages.json

@@ -2776,6 +2776,10 @@
        "category": "Message",
        "code": 6013
    },
+    "Do not emit js outputs.": {


Only emit declaration files.

mhegazy · 2018-01-05T00:48:30Z

src/server/server.ts

@@ -980,7 +980,7 @@ namespace ts.server {
    };

    const ioSession = new IOSession(options);
-    process.on("uncaughtException", err => {
+    process.on("uncaughtException", (err: any) => {


Because it was failing compilation when doing a “gulp build” with an error.

should work now. that was a @types/node issue.

merge when microsoft/TypeScript#20735 hits

niieani · 2018-01-17T22:26:20Z

@nojvek awesome job so far! The Puppeteer community would love some progress on this! ❤️

nojvek · 2018-01-17T23:02:23Z

On it.

…

On Wed, Jan 17, 2018 at 2:26 PM Bazyli Brzóska ***@***.***> wrote: @nojvek <https://github.com/nojvek> the Puppeteer community would love some progress on this! ❤️ — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#20735 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA-JVO5w32fVMKrjX3ixMygNKGtq4l90ks5tLnOxgaJpZM4REbr-> .

nojvek · 2018-01-23T06:38:40Z

@mhegazy want to take another pass ?

@niieani - Unfortunately this PR doesn't enable emitting declarations from a JS project. I'll start work on it as soon as this PR lands.

mhegazy · 2018-01-24T23:59:04Z

@DanielRosenwasser and @sheetalkamat any concerns?

niieani · 2018-01-26T09:12:43Z

Thank you @nojvek! Looking forward to the next PR 😊!

nojvek · 2018-01-29T16:13:28Z

@mhegazy @sheetalkamat

// @declaration: true
// @emitDeclarationsOnly: true

For consistency with declaration: true flag, does it make sense to call this new flag emitDeclarationOnly ?

        declaration?: boolean;
        emitDeclarationsOnly?: boolean;
        declarationDir?: string;

It seems the pattern is to use singular *declaration*.

What do you think ?

I can send a rename PR

mhegazy · 2018-01-30T00:04:34Z

humm.. good point.. we can change it to EmitDeclarationOnly

nojvek · 2018-01-30T00:06:31Z

K will send a rename PR

…

On Mon, Jan 29, 2018 at 4:05 PM Mohamed Hegazy ***@***.***> wrote: humm.. good point.. we can change it to EmitDeclarationOnly — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#20735 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA-JVDl4kIDfOb339mxN7auA52aTAzFYks5tPly4gaJpZM4REbr-> .

mhegazy · 2018-02-05T22:30:58Z

rename PR up in #21651

* Add emitOnlyDeclarations flag * Fix name * verifyOptions checking logic * Passing tests * doJsEmitBaseline * Tests !!!

* --emitDeclarationsOnly flag to enable declarations only output (#20735) * Add emitOnlyDeclarations flag * Fix name * verifyOptions checking logic * Passing tests * doJsEmitBaseline * Tests !!! * Rename switch `--emitDeclarationsOnly` to `--emitDeclarationOnly` (#21651) * Rename `--emitDeclarationsOnly` to `--renameDeclarationOnly` * Rename test files

nojvek changed the title ~~Adding noEmitJs flag to enable declarations only output~~ noEmitJs flag to enable declarations only output Dec 16, 2017

sheetalkamat reviewed Dec 18, 2017

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mhegazy suggested changes Jan 5, 2018

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kevlened added a commit to kevlened/str2buf that referenced this pull request Jan 6, 2018

Add types

d9b235c

merge when microsoft/TypeScript#20735 hits

Bnaya mentioned this pull request Jan 21, 2018

Suggestion: generate typescript declarations using angular/clutz (Closure to TypeScript .d.ts generator) puppeteer/puppeteer#1826

Closed

Noj Vek added 6 commits January 22, 2018 22:36

Add emitOnlyDeclarations flag

ee1d08e

Fix name

7aa27b8

verifyOptions checking logic

6a41628

Passing tests

fdcb8f4

doJsEmitBaseline

e9b6c99

Tests !!!

e34b4fb

nojvek changed the title ~~noEmitJs flag to enable declarations only output~~ --emitDeclarationsOnly flag to enable declarations only output Jan 23, 2018

mhegazy approved these changes Jan 24, 2018

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sheetalkamat approved these changes Jan 25, 2018

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mhegazy merged commit afc588e into microsoft:master Jan 25, 2018

mhegazy mentioned this pull request Feb 5, 2018

Rename switch --emitDeclarationsOnly to --emitDeclarationOnly #21651

Merged

mhegazy changed the title ~~--emitDeclarationsOnly flag to enable declarations only output~~ --emitDeclarationOnly flag to enable declarations only output Feb 5, 2018

mhegazy pushed a commit that referenced this pull request Feb 5, 2018

--emitDeclarationsOnly flag to enable declarations only output (#20735)

6496b0b

* Add emitOnlyDeclarations flag * Fix name * verifyOptions checking logic * Passing tests * doJsEmitBaseline * Tests !!!

mhegazy mentioned this pull request Feb 5, 2018

Port --emitDeclarationOnly flag support to release-2.7 #21654

Merged

mhegazy mentioned this pull request Feb 6, 2018

Add new flag support for TS 2.7.2 #21657

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3 tasks

DanielRosenwasser mentioned this pull request Feb 21, 2018

Only emit declaration files with TypeScript urql-graphql/urql#49

Merged

This was referenced Mar 5, 2018

Document --emitDeclarationOnly microsoft/TypeScript-Handbook#730

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Suggestion : Documentation about a proper/clean way to reuse types/interfaces in Babel 7 #22326

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--emitDeclarationOnly flag to enable declarations only output #20735

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--emitDeclarationOnly flag to enable declarations only output #20735

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