Ensure babel transpilation cache is invalided when changing versions of babel plugins or AST transforms #841
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stefanpenner
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Ensure we include the package’s version in the configuration, so that the babel-loader can detect module version changes in it’s cache key consideration. Without this, installing a new node_module may not result in babel-loaders cache expiration occurring.
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stefanpenner
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Jun 9, 2021
stefanpenner
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Jun 9, 2021
| @@ -144,6 +145,36 @@ export function excludeDotFiles(files: string[]) { | |||
| return files.filter(file => !file.startsWith('.') && !file.includes('/.')); | |||
| } | |||
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| export const CACHE_BUSTING_PLUGIN = { | |||
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this fixes (2)
stefanpenner
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Jun 9, 2021
| useMethod?: string; | ||
| } | ||
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| const { findUpPackagePath } = resolvePackagePath; | ||
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| export function maybeNodeModuleVersion(path: string) { |
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rwjblue
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We could add another CI worker to run sequential ember-try scenarios... but it's unclear we can just continue to add those CI jobs... if we want to do that sure, otherwise I think this is adequate given our current priorities. |
Probably. I think we should likely also include targets info, though it may already be included (since its probably part of options to |
I believe these are in there already |
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@rwjblue with a fresh mind tomorrow I’ll think about approaches to do a more e2e test that is the right cost/benefit. |
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Jun 11, 2021
Today, babel’s caches (via babel-loader today) expires caches only if the options passed to it change, unfortunately if you upgrade a plugin without changing the configuration options and the file contents remains the same, the cache will not be evicted. This can lead to spurious caching problems if the associated plugins behavior has changed. To address this defect we now include (when available) the package.json#version of the babel plugins used in our own no-op babel plugin’s configuration. This new no-op plugin is then inserted at the end of the configuration in question.
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This includes 2 fixes:
Ensure we include the package’s version in the configuration, so that the babel-loader can detect module version changes in it’s cache key consideration. Without this, installing a new node_module may not result in babel-loaders cache expiration occurring.
We now ensure a given plugins node_module version is included (when available) in the babel configuration. Which ensures the cache is correctly evicted. This is accomplished by adding our own noop babel plugin into the plugin configuration, and having it contain the various plugin path / version pairs.