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perf(extract): splits transpiler availability from execution (#804)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| import path from "node:path/posix"; | ||
| import { createRequire } from "node:module"; | ||
| import { coerce, satisfies } from "semver"; | ||
|
|
||
| const require = createRequire(import.meta.url); | ||
|
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| const PACKAGE_RE = "[^/]+"; | ||
| const SCOPED_PACKAGE_RE = "@[^/]+(/[^/]+)"; | ||
| const ROOT_MODULE_RE = new RegExp(`^(${SCOPED_PACKAGE_RE}|${PACKAGE_RE})`, "g"); | ||
|
|
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| function extractRootModuleName(pModuleName) { | ||
| return (pModuleName.match(ROOT_MODULE_RE) || []).shift(); | ||
| } | ||
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| function getVersion(pModuleName) { | ||
| // of course we'd love to use something like an import with an import assertion | ||
| // (yo, you're import-ing 'json'!), but that's _experimental_, printing scary | ||
| // messages to stderr so: ¯\_(ツ)_/¯ | ||
| // eslint-disable-next-line import/no-dynamic-require, security/detect-non-literal-require | ||
| const lManifest = require(path.join( | ||
| extractRootModuleName(pModuleName), | ||
| "package.json" | ||
| )); | ||
| return lManifest.version; | ||
| } | ||
|
|
||
| export default function tryImportAvailable(pModuleName, pSemanticVersion) { | ||
| try { | ||
| if (pSemanticVersion) { | ||
| const lVersion = getVersion(pModuleName); | ||
| const lCoerced = coerce(lVersion); | ||
| if ( | ||
| lVersion && | ||
| lCoerced && | ||
| !satisfies(lCoerced.version, pSemanticVersion) | ||
| ) { | ||
| return false; | ||
| } | ||
| } | ||
| // of course we'd love to use something like import.meta.resolve, but | ||
| // that's _experimental_, so ¯\_(ツ)_/¯ | ||
| return Boolean(require.resolve(pModuleName)); | ||
| } catch (pError) { | ||
| return false; | ||
| } | ||
| } |
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