automerge wasm hmm

test.js

const process = require('process')
// use either 'normal' or WASM automerge here
const Automerge = require('./automerge/src/automerge')
// const Automerge = require('./bench/automerge-pinned')


function local_1(doc, edit) {
    const new_doc = Automerge.change(doc, d => {
        if (edit[1] !== 0) {
            d.text.deleteAt(edit[0], edit[1])
        } else {
            d.text.insertAt(edit[0], ...edit[2])
        }
    })
    return [new_doc, Automerge.getChanges(doc, new_doc)]
}


function local_2(doc, edit) {
    const [new_doc, change] = Automerge.Frontend.change(doc, d => {
        if (edit[1] !== 0) {
            d.text.deleteAt(edit[0], edit[1])
        } else {
            d.text.insertAt(edit[0], ...edit[2])
        }
    })
    return [new_doc, [Automerge.encodeChange(change)]]
}


function microLTR(length) {
    const edits = []
    for (let i = 0; i < length; i++)
        edits.push([i, 0, 'a'])
    return edits
}


// Change here
const REPEATS = 5
const LENGTH = 1000
const METHOD = local_1 // which method to use?
const DATA = microLTR(LENGTH)


for (let n = 1; n <= REPEATS; n++) {
    let t0, t1
    let change
    let doc1 = Automerge.init();
    [doc1, change] = Automerge.Frontend.change(doc1, d => d.text = new Automerge.Text())
    let doc2 = Automerge.init()
    doc2 = Automerge.applyChanges(doc2, [Automerge.encodeChange(change)])
    let log = []

    t0 = process.hrtime.bigint()
    // Local
    for (let edit of DATA) {
        [doc1, change] = METHOD(doc1, edit)
        log.push(change)
    }
    t1 = process.hrtime.bigint()
    console.log(`local: ${(Number(t1 - t0) / 1000000).toFixed(2)} ms`)

    // Remote
    t0 = process.hrtime.bigint()
    for (let change of log) {
        doc2 = Automerge.applyChanges(doc2, change)
    }
    t1 = process.hrtime.bigint()
    console.log(`remote: ${(Number(t1 - t0) / 1000000).toFixed(2)} ms`)

    Automerge.free(doc1)
    Automerge.free(doc2)
}