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src: add cache to nearest parent package json #59086

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Merged
merged 1 commit into from
Jul 21, 2025
Merged

src: add cache to nearest parent package json #59086

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13 changes: 12 additions & 1 deletion lib/internal/modules/package_json_reader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ const {
JSONParse,
ObjectDefineProperty,
RegExpPrototypeExec,
SafeMap,
StringPrototypeIndexOf,
StringPrototypeSlice,
} = primordials;
Expand All @@ -28,6 +29,8 @@ const path = require('path');
const { validateString } = require('internal/validators');
const internalFsBinding = internalBinding('fs');

const nearestParentPackageJSONCache = new SafeMap();

/**
* @typedef {import('typings/internalBinding/modules').DeserializedPackageConfig} DeserializedPackageConfig
* @typedef {import('typings/internalBinding/modules').PackageConfig} PackageConfig
Expand Down Expand Up @@ -131,13 +134,21 @@ function read(jsonPath, { base, specifier, isESM } = kEmptyObject) {
* @returns {undefined | DeserializedPackageConfig}
*/
function getNearestParentPackageJSON(checkPath) {
if (nearestParentPackageJSONCache.has(checkPath)) {
return nearestParentPackageJSONCache.get(checkPath);
}

const result = modulesBinding.getNearestParentPackageJSON(checkPath);

if (result === undefined) {
nearestParentPackageJSONCache.set(checkPath, undefined);
return undefined;
}

return deserializePackageJSON(checkPath, result);
const packageConfig = deserializePackageJSON(checkPath, result);
nearestParentPackageJSONCache.set(checkPath, packageConfig);

return packageConfig;
}

/**
Expand Down
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