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module: be lazy when creating CJS facades #17153

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module: be lazy when creating CJS facades #17153

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bmeck
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@bmeck bmeck commented Nov 20, 2017

This should remove the penalty for loading CJS that is never imported.

Aside: We could probably do more low hanging optimizations if we could reuse facades.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines
Affected core subsystem(s)

module

@bmeck
module: be lazy when creating CJS facades
5d6512e 
This should remove the penalty for loading CJS that is never imported.
@nodejs-github-bot nodejs-github-bot added the module Issues and PRs related to the module subsystem. label Nov 20, 2017
Fishrock123
Fishrock123 approved these changes Nov 20, 2017
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lgtm with CI https://ci.nodejs.org/job/node-test-pull-request/11552/

@Fishrock123 Fishrock123 mentioned this pull request Nov 20, 2017
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TimothyGu
TimothyGu approved these changes Nov 20, 2017
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lib/module.js
ctx.reflect.exports.default.set(exports);
return ctx;
})
);
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Nit: weird indentation

      ESMLoader.moduleMap.set(
        urlString,
        new ModuleJob(ESMLoader, url, async () => {
          const ctx = createDynamicModule(
            ['default'], url);
          ctx.reflect.exports.default.set(exports);
          return ctx;
        })
      );

Also I suppose the const exports = this.exports isn't needed as it's used in an arrow function only anyway.

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need to save it due to timing difference.

@bmeck bmeck mentioned this pull request Nov 27, 2017
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@addaleax addaleax added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Nov 28, 2017
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CI: https://ci.nodejs.org/job/node-test-commit/14414/

@addaleax addaleax removed the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Nov 28, 2017
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Landed in 2219859

@addaleax addaleax closed this Nov 28, 2017
addaleax pushed a commit that referenced this pull request Nov 28, 2017
@bmeck @addaleax
module: be lazy when creating CJS facades
2219859 
This should remove the penalty for loading CJS that is never imported.

PR-URL: #17153
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
MylesBorins pushed a commit that referenced this pull request Dec 12, 2017
@bmeck @MylesBorins
module: be lazy when creating CJS facades
d18d3e3 
This should remove the penalty for loading CJS that is never imported.

PR-URL: #17153
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
MylesBorins pushed a commit that referenced this pull request Dec 12, 2017
@bmeck @MylesBorins
module: be lazy when creating CJS facades
0af011a 
This should remove the penalty for loading CJS that is never imported.

PR-URL: #17153
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
MylesBorins pushed a commit that referenced this pull request Dec 12, 2017
@bmeck @MylesBorins
module: be lazy when creating CJS facades
06da8a7 
This should remove the penalty for loading CJS that is never imported.

PR-URL: #17153
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@MylesBorins MylesBorins mentioned this pull request Dec 12, 2017
Merged
gibfahn pushed a commit that referenced this pull request Dec 19, 2017
@bmeck @gibfahn
module: be lazy when creating CJS facades
da40417 
This should remove the penalty for loading CJS that is never imported.

PR-URL: #17153
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@gibfahn gibfahn mentioned this pull request Dec 20, 2017
Closed
gibfahn pushed a commit that referenced this pull request Dec 20, 2017
@bmeck @gibfahn
module: be lazy when creating CJS facades
371e3f1 
This should remove the penalty for loading CJS that is never imported.

PR-URL: #17153
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@gibfahn gibfahn mentioned this pull request Dec 20, 2017
Merged
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@jasnell jasnell jasnell approved these changes

@Fishrock123 Fishrock123 Fishrock123 approved these changes

@benjamingr benjamingr benjamingr approved these changes

@TimothyGu TimothyGu TimothyGu approved these changes

@cjihrig cjihrig cjihrig approved these changes

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