52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
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'use strict'
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const path = require('path')
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const dotProp = require('dot-prop')
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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 hashSource (source, cache) {
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if (cache && cache.sourceHashes && cache.sourceHashes.has(source)) {
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return cache.sourceHashes.get(source)
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}
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const basename = path.basename(source)
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const parts = basename.split('#')
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const filename = parts[0]
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const filepath = path.join(path.dirname(source), filename)
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const pkgAccessor = filename === 'package.json'
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? parts[1] || 'babel'
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: null
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const promise = readSafe(filepath, cache)
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.then(contents => {
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if (!contents) throw new errors.NoSourceFileError(source)
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if (!pkgAccessor) {
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return md5Hex(contents)
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}
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const json = JSON.parse(contents.toString('utf8'))
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const value = dotProp.get(json, pkgAccessor) || {}
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return md5Hex(JSON.stringify(value))
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})
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if (cache && cache.sourceHashes) {
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cache.sourceHashes.set(source, promise)
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}
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return promise
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}
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function hashSources (sources, fixedHashes, cache) {
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const promises = sources.map(item => {
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if (fixedHashes && fixedHashes.has(item.source)) return fixedHashes.get(item.source)
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return hashSource(item.source, cache)
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})
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return Promise.all(promises)
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}
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module.exports = hashSources
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