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esm: replace --entry-type with --input-type #27184

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GeoffreyBooth
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This is a change discussed and approved by the modules working group per our meeting today on 2019-04-10. We’re hoping that this change can be merged in before the release of Node 12.

Per nodejs/modules#300 (comment), this PR replaces --entry-type with --input-type, a flag just like --entry-type but only for --eval, --print and STDIN.

This way we still provide a way to use ESM in those non-file inputs, but we’re removing the footgun that is --entry-type in its current form. To use ESM in files, the files need to end in .mjs or be in a "type": "module" package scope.

Tests and docs updated.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines

@nodejs-github-bot nodejs-github-bot added the lib / src Issues and PRs related to general changes in the lib or src directory. label Apr 11, 2019
@@ -2223,6 +2219,18 @@ closed.
These errors have never been released, but had been present on master between
releases.

<a id="ERR_ENTRY_TYPE_MISMATCH"></a>
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Was this left in on purpose?

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Yes, see the section head:

These errors have never been released, but had been present on master between
releases.

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@jkrems jkrems left a comment

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LGTM once the entry type error in the docs is removed

lib/internal/main/repl.js Outdated Show resolved Hide resolved
@devsnek devsnek added esm Issues and PRs related to the ECMAScript Modules implementation. experimental Issues and PRs related to experimental features. labels Apr 11, 2019
doc/api/errors.md Outdated Show resolved Hide resolved
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Code LGTM. I will defer the decision around feature change to the modules group, but looks like people welcome it there, and I personally like this approach better. Great work researching into the details! 👍

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the modules group achieved consensus on this change, so we do support it

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@GeoffreyBooth GeoffreyBooth force-pushed the flag-for-string-input-only branch 3 times, most recently from ab4712a to fb9d934 Compare April 15, 2019 21:22
@BridgeAR BridgeAR added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Apr 16, 2019
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LGTM

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landed in 96e46d3

MylesBorins pushed a commit that referenced this pull request Apr 16, 2019
New flag is for string input only

PR-URL: #27184
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
@ljharb ljharb deleted the flag-for-string-input-only branch April 16, 2019 17:19
chjj added a commit to chjj/bthreads that referenced this pull request Apr 30, 2019
chjj added a commit to bcoin-org/bmocha that referenced this pull request May 3, 2019
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