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esm: improve packageResolve #34269

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esm: improve packageResolve #34269

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e33a096
esm: improve packageResolve
himself65 Jul 8, 2020
1aeb4d1
fixup!: rename variable
himself65 Jul 8, 2020
b0bc610
fixup!: add a comment
himself65 Jul 8, 2020
4e3df4f
fixup!: fix a comment
himself65 Jul 8, 2020
873917c
fixup!: remove unnecessary code
himself65 Jul 8, 2020
8449e6b
fixup!: fix a bug
himself65 Jul 9, 2020
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22 changes: 8 additions & 14 deletions lib/internal/modules/esm/resolve.js
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Original file line number Diff line number Diff line change
Expand Up @@ -133,8 +133,9 @@ function getPackageScopeConfig(resolved, base) {
const packageJSONPath = packageJSONUrl.pathname;
if (StringPrototypeEndsWith(packageJSONPath, 'node_modules/package.json'))
break;
const packageConfig = getPackageConfig(fileURLToPath(packageJSONUrl), base);
if (packageConfig.exists) return packageConfig;
const filePath = fileURLToPath(packageJSONUrl);
const packageConfig = getPackageConfig(filePath, base);
if (packageConfig.exists) return { path: filePath, packageConfig };

const lastPackageJSONUrl = packageJSONUrl;
packageJSONUrl = new URL('../package.json', packageJSONUrl);
Expand All @@ -151,7 +152,7 @@ function getPackageScopeConfig(resolved, base) {
exports: undefined
};
packageJSONCache.set(fileURLToPath(packageJSONUrl), packageConfig);
return packageConfig;
return { packageConfig };
}

/*
Expand Down Expand Up @@ -488,7 +489,7 @@ function packageExportsResolve(
}

function getPackageType(url) {
const packageConfig = getPackageScopeConfig(url, url);
const { packageConfig } = getPackageScopeConfig(url, url);
return packageConfig.type;
}

Expand Down Expand Up @@ -533,17 +534,10 @@ function packageResolve(specifier, base, conditions) {
'' : '.' + StringPrototypeSlice(specifier, separatorIndex);

// ResolveSelf
const packageConfig = getPackageScopeConfig(base, base);
const { path, packageConfig } = getPackageScopeConfig(base, base);
if (packageConfig.exists) {
// TODO(jkrems): Find a way to forward the pair/iterator already generated
// while executing GetPackageScopeConfig
let packageJSONUrl;
for (const [ filename, packageConfigCandidate ] of packageJSONCache) {
if (packageConfig === packageConfigCandidate) {
packageJSONUrl = pathToFileURL(filename);
break;
}
}
// If path not exist, then packageConfig.exists is false too
const packageJSONUrl = pathToFileURL(path);
if (packageJSONUrl !== undefined &&
packageConfig.name === packageName &&
packageConfig.exports !== undefined) {
Expand Down