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opt
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alt
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alt-nodejs8
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root
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lib
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node_modules
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npm
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node_modules.bundled
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pacote
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Filename :
prefetch.js
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'use strict' const BB = require('bluebird') const cacache = require('cacache') const finished = BB.promisify(require('mississippi').finished) const optCheck = require('./lib/util/opt-check') const npa = require('npm-package-arg') module.exports = prefetch function prefetch (spec, opts) { opts = optCheck(opts) spec = npa(spec, opts.where) opts.log.warn('prefetch', 'pacote.prefetch() is deprecated. Please use pacote.tarball() instead.') const startTime = Date.now() if (!opts.cache) { opts.log.info('prefetch', 'skipping prefetch: no cache provided') return BB.resolve({ spec }) } if (opts.integrity && !opts.preferOnline) { opts.log.silly('prefetch', 'checking if', opts.integrity, 'is already cached') return cacache.get.hasContent(opts.cache, opts.integrity).then(info => { if (info) { opts.log.silly('prefetch', `content already exists for ${spec} (${Date.now() - startTime}ms)`) return { spec, integrity: info.integrity, size: info.size, byDigest: true } } else { return prefetchByManifest(startTime, spec, opts) } }) } else { opts.log.silly('prefetch', `no integrity hash provided for ${spec} - fetching by manifest`) return prefetchByManifest(startTime, spec, opts) } } let fetch function prefetchByManifest (start, spec, opts) { let manifest let integrity return BB.resolve().then(() => { if (!fetch) { fetch = require('./lib/fetch') } const stream = fetch.tarball(spec, opts) if (!stream) { return } stream.on('data', function () {}) stream.on('manifest', m => { manifest = m }) stream.on('integrity', i => { integrity = i }) return finished(stream) }).then(() => { opts.log.silly('prefetch', `${spec} done in ${Date.now() - start}ms`) return { manifest, spec, integrity: integrity || (manifest && manifest._integrity), byDigest: false } }) }