45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
'use strict'
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const packageHash = require('package-hash')
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const md5Hex = require('md5-hex')
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const errors = require('./errors')
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const readSafe = require('./readSafe')
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function hashFile (filename, cache) {
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return readSafe(filename, cache)
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.then(contents => {
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if (!contents) throw new errors.BadDependencyError(filename)
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return md5Hex(contents)
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})
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}
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function hashPackage (filename, fromPackage) {
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return packageHash(`${fromPackage}/package.json`)
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.catch(err => {
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throw new errors.BadDependencyError(filename, err)
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})
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}
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function hashDependency (filename, fromPackage, cache) {
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if (cache && cache.dependencyHashes && cache.dependencyHashes.has(filename)) {
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return cache.dependencyHashes.get(filename)
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}
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const promise = fromPackage
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? hashPackage(filename, fromPackage)
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: hashFile(filename, cache)
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if (cache && cache.dependencyHashes) {
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cache.dependencyHashes.set(filename, promise)
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}
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return promise
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}
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function hashDependencies (dependencies, cache) {
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const promises = dependencies.map(item => hashDependency(item.filename, item.fromPackage, cache))
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return Promise.all(promises)
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}
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module.exports = hashDependencies
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