archiving-map
v1.1.0
Published
a Map which also maintains previous values (like git)
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sandhawkeReadme
archiving-map
const { ArchivingMap } = require('archiving-map')
const arc = new ArchivingMap('./mydata')
v1 = await arc.set('user/alice', '<html> .... whatever .... </html>')
v2 = await arc.set('user/alice', '<html> .... whatever version 2 .... </html>')
arc.get('user/alice')
// => '<html> .... whatever version 2 .... </html>'
// get a particular version
await arc.get('user/alice', v1.hash)
// => '<html> .... whatever .... </html>
// binary data is fine, but there's no where to keep Content-Type. So put
// it in the key, like you do in a filesystem.
arc.set('icon.jpg', someBinaryData)
Currently just mem.js version is implemented.
Planning to make a version backed by git, which is why it's async.
Maybe have a setMany(kvmap) to gather changes into one commit?
Concurrency? What happens if you call arc.set a second time before the first resolves? Leave this up to git? Or serialize it through a sleep-loop with an input queue? (loop.wake() when you add to the queue)
Maybe simple-git does this for us. Looks like it.
v1, etc, are { time, hash, tags[] }. maybe .key and .value, if you want to pass it in with any of those values set. it's really makeVersion.
arc.tag(vspec, 'tag')