Adapt to new async db functions

This commit is contained in:
Jacob Karlsson 2024-04-27 22:41:01 +02:00
parent 07c3e295b2
commit 530db5b96b
5 changed files with 262 additions and 211 deletions

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@ -1,25 +0,0 @@
name: CI
on:
push:
branches: [master]
pull_request:
branches: [master]
jobs:
test:
runs-on: ubuntu-latest
timeout-minutes: 10
strategy:
matrix:
node-version: [18.x, 20.x]
steps:
- uses: actions/checkout@v3
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v3
with:
node-version: ${{ matrix.node-version }}
- run: npm install
- run: npm test

13
.woodpecker.yaml Normal file
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@ -0,0 +1,13 @@
matrix:
NODE_VERSION:
- 18
- 20
steps:
test:
when:
event: [push]
image: node:${NODE_VERSION}
commands:
- npm install
- npm test

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@ -1,5 +1,6 @@
const Obz = require('obz')
const MsgV4 = require('ppppp-db/msg-v4')
const pull = require('pull-stream')
const PREFIX = 'set_v1__'
@ -191,23 +192,35 @@ function initSet(peer, config) {
/**
* @param {string} id
* @param {string} subdomain
* @param {(err: Error | null, tangle?: any) => void} cb
*/
function readSet(id, subdomain) {
function readSet(id, subdomain, cb) {
const domain = fromSubdomain(subdomain)
const mootID = MsgV4.getMootID(id, domain)
const tangle = peer.db.getTangle(mootID)
if (!tangle) return new Set()
const msgIDs = tangle.topoSort()
const set = new Set()
for (const msgID of msgIDs) {
const msg = peer.db.get(msgID)
if (isValidSetMsg(msg)) {
const { add, del } = msg.data
for (const value of add) set.add(value)
for (const value of del) set.delete(value)
}
}
return set
// @ts-ignore
peer.db.getTangle(mootID, (err, tangle) => {
if (err) return cb(err)
if (!tangle) return cb(null, new Set())
const msgIDs = tangle.topoSort()
const set = new Set()
pull(
pull.values(msgIDs),
pull.asyncMap((msgID, cb) => {
peer.db.get(msgID, cb)
}),
pull.drain((msg) => {
if (isValidSetMsg(msg)) {
const { add, del } = msg.data
for (const value of add) set.add(value)
for (const value of del) set.delete(value)
}
}, (err) => {
// prettier-ignore
if (err) return cb(Error("Stream failed on readSet()", { cause: err }))
return cb(null, set)
})
)
})
}
/**
@ -278,25 +291,29 @@ function initSet(peer, config) {
/**
* @param {string} subdomain
* @param {CB<number>} cb
*/
function _squeezePotential(subdomain) {
function _squeezePotential(subdomain, cb) {
// prettier-ignore
if (!loadedAccountID) throw new Error('Cannot squeeze potential before loading')
if (!loadedAccountID) return cb(Error('Cannot squeeze potential before loading'))
// TODO: improve this so that the squeezePotential is the size of the
// tangle suffix built as a slice from the fieldRoots
const mootID = MsgV4.getMootID(loadedAccountID, fromSubdomain(subdomain))
const tangle = peer.db.getTangle(mootID)
if (!tangle) return 0
const maxDepth = tangle.maxDepth
const currentItemRoots = itemRoots.getAll(subdomain)
let minDepth = Infinity
for (const item in currentItemRoots) {
for (const msgID of currentItemRoots[item]) {
const depth = tangle.getDepth(msgID)
if (depth < minDepth) minDepth = depth
// @ts-ignore
peer.db.getTangle(mootID, (err, tangle) => {
if (err) return cb(err)
if (!tangle) return cb(null, 0)
const maxDepth = tangle.maxDepth
const currentItemRoots = itemRoots.getAll(subdomain)
let minDepth = Infinity
for (const item in currentItemRoots) {
for (const msgID of currentItemRoots[item]) {
const depth = tangle.getDepth(msgID)
if (depth < minDepth) minDepth = depth
}
}
}
return maxDepth - minDepth
return cb(null, maxDepth - minDepth)
})
}
//#endregion
@ -320,8 +337,8 @@ function initSet(peer, config) {
// microtask is needed to ensure that loadPromise is assigned BEFORE this
// body is executed (which in turn does inversion of control when `cb` or
// `resolve` is called)
queueMicrotask(() => {
for (const rec of peer.db.records()) {
queueMicrotask(async () => {
for await (const rec of peer.db.records()) {
if (!rec.msg) continue
maybeLearnAboutSet(rec.id, rec.msg)
}
@ -354,39 +371,43 @@ function initSet(peer, config) {
loaded(() => {
// TODO this error needs to be put into the `cb`, not thrown
assert(!!loadedAccountID, 'Cannot add to Set before loading')
const currentSet = readSet(loadedAccountID, subdomain)
if (currentSet.has(value)) return cb(null, false)
const domain = fromSubdomain(subdomain)
readSet(loadedAccountID, subdomain, (err, currentSet) => {
if (err) return cb(err)
// Populate supersedes
const supersedes = []
const toDeleteFromItemRoots = new Map()
const currentItemRoots = itemRoots.getAll(subdomain)
for (const item in currentItemRoots) {
// If we are re-adding this item, OR if this item has been deleted,
// then we should update roots
if (item === value || !currentSet.has(item)) {
supersedes.push(...currentItemRoots[item])
for (const msgID of currentItemRoots[item]) {
toDeleteFromItemRoots.set(msgID, item)
if (currentSet.has(value)) return cb(null, false)
const domain = fromSubdomain(subdomain)
// Populate supersedes
const supersedes = []
const toDeleteFromItemRoots = new Map()
const currentItemRoots = itemRoots.getAll(subdomain)
for (const item in currentItemRoots) {
// If we are re-adding this item, OR if this item has been deleted,
// then we should update roots
if (item === value || !currentSet.has(item)) {
supersedes.push(...currentItemRoots[item])
for (const msgID of currentItemRoots[item]) {
toDeleteFromItemRoots.set(msgID, item)
}
}
}
}
const data = { add: [value], del: [], supersedes }
peer.db.feed.publish(
{ account: loadedAccountID, domain, data },
(err, rec) => {
// prettier-ignore
if (err) return cb(new Error(`Failed to create msg when adding to Set "${subdomain}"`, { cause: err }))
for (const [msgID, item] of toDeleteFromItemRoots) {
itemRoots.del(subdomain, item, msgID)
}
const data = { add: [value], del: [], supersedes }
peer.db.feed.publish(
{ account: loadedAccountID, domain, data },
// @ts-ignore
cb(null, true)
watch.set({ event: 'add', subdomain, value })
}
)
(err, rec) => {
// prettier-ignore
if (err) return cb(new Error(`Failed to create msg when adding to Set "${subdomain}"`, { cause: err }))
for (const [msgID, item] of toDeleteFromItemRoots) {
itemRoots.del(subdomain, item, msgID)
}
// @ts-ignore
cb(null, true)
watch.set({ event: 'add', subdomain, value })
}
)
})
})
}
@ -404,99 +425,126 @@ function initSet(peer, config) {
loaded(() => {
// TODO this error needs to be put into the `cb`, not thrown
assert(!!loadedAccountID, 'Cannot add to Set before loading')
const currentSet = readSet(loadedAccountID, subdomain)
if (!currentSet.has(value)) return cb(null, false)
const domain = fromSubdomain(subdomain)
readSet(loadedAccountID, subdomain, (err, currentSet) => {
if (err) return cb(err)
// Populate supersedes
const supersedes = []
const currentItemRoots = itemRoots.getAll(subdomain)
for (const item in currentItemRoots) {
if (item === value || !currentSet.has(item)) {
supersedes.push(...currentItemRoots[item])
if (!currentSet.has(value)) return cb(null, false)
const domain = fromSubdomain(subdomain)
// Populate supersedes
const supersedes = []
const currentItemRoots = itemRoots.getAll(subdomain)
for (const item in currentItemRoots) {
if (item === value || !currentSet.has(item)) {
supersedes.push(...currentItemRoots[item])
}
}
}
const data = { add: [], del: [value], supersedes }
peer.db.feed.publish(
{ account: loadedAccountID, domain, data },
(err, rec) => {
// prettier-ignore
if (err) return cb(new Error(`Failed to create msg when deleting from Set "${subdomain}"`, { cause: err }))
const data = { add: [], del: [value], supersedes }
peer.db.feed.publish(
{ account: loadedAccountID, domain, data },
// @ts-ignore
cb(null, true)
watch.set({ event: 'del', subdomain, value })
}
)
(err, rec) => {
// prettier-ignore
if (err) return cb(new Error(`Failed to create msg when deleting from Set "${subdomain}"`, { cause: err }))
// @ts-ignore
cb(null, true)
watch.set({ event: 'del', subdomain, value })
}
)
})
})
}
/**
* @param {string} subdomain
* @param {any} value
* @param {string=} id
* @param {string?} id
* @param {CB<boolean>} cb
*/
function has(subdomain, value, id) {
function has(subdomain, value, id, cb) {
assert(!!loadedAccountID, 'Cannot call has() before loading')
const set = readSet(id ?? loadedAccountID, subdomain)
return set.has(value)
readSet(id ?? loadedAccountID, subdomain, (err, set) => {
if (err) return cb(err)
return cb(null, set.has(value))
})
}
/**
* @param {string} subdomain
* @param {string=} id
* @param {string?} id
* @param {CB<Array<any>>} cb
*/
function values(subdomain, id) {
function values(subdomain, id, cb) {
assert(!!loadedAccountID, 'Cannot call values() before loading')
const set = readSet(id ?? loadedAccountID, subdomain)
return [...set]
readSet(id ?? loadedAccountID, subdomain, (err, set) => {
if (err) return cb(err)
return cb(null, [...set])
})
}
/**
* @public
* @param {string} tangleID
* @returns {number}
* @param {CB<number>} cb
*/
function minGhostDepth(tangleID) {
return Math.max(0, minRequiredDepth(tangleID) - ghostSpan)
function minGhostDepth(tangleID, cb) {
minRequiredDepth(tangleID, (err, minDepth) => {
if (err) return cb(err)
return cb(null, Math.max(0, minDepth - ghostSpan))
})
}
/**
* @public
* @param {string} tangleID
* @returns {number}
* @param {CB<number>} cb
*/
function minRequiredDepth(tangleID) {
const tangle = peer.db.getTangle(tangleID)
function minRequiredDepth(tangleID, cb) {
// @ts-ignore
peer.db.getTangle(tangleID, (err, tangle) => {
if (err) return cb(err)
// prettier-ignore
if (!tangle) return 0
// prettier-ignore
if (!MsgV4.isMoot(tangle.root)) throw new Error(`Tangle "${tangleID}" is not a moot`)
const domain = tangle.root.metadata.domain
// prettier-ignore
if (!domain.startsWith(PREFIX)) throw new Error(`Tangle "${tangleID}" is not a Set moot`)
// prettier-ignore
if (!tangle) return cb(null, 0)
// prettier-ignore
if (!MsgV4.isMoot(tangle.root)) return cb(Error(`Tangle "${tangleID}" is not a moot`))
const domain = tangle.root.metadata.domain
// prettier-ignore
if (!domain.startsWith(PREFIX)) return cb(Error(`Tangle "${tangleID}" is not a Set moot`))
// Discover item roots
const itemRoots = new Set()
const msgIDs = tangle.topoSort()
for (const msgID of msgIDs) {
const msg = peer.db.get(msgID)
if (!msg?.data) continue
for (const supersededMsgID of msg.data.supersedes) {
itemRoots.delete(supersededMsgID)
}
itemRoots.add(msgID)
}
// Discover item roots
const itemRoots = new Set()
pull(
pull.values(tangle.topoSort()),
pull.asyncMap((msgID, cb) => {
peer.db.getRecord(msgID, cb)
}),
pull.drain((rec) => {
const { msg, id: msgID } = rec
if (!msg?.data) return
for (const supersededMsgID of msg.data.supersedes) {
itemRoots.delete(supersededMsgID)
}
itemRoots.add(msgID)
}, (err) => {
if (err) return cb(Error("Failed to iterate over tangle messages in minRequiredDepth()", { cause: err }))
// Get minimum depth of all item roots
let minDepth = Infinity
for (const msgID of itemRoots) {
const depth = tangle.getDepth(msgID)
if (depth < minDepth) minDepth = depth
}
return minDepth
// Get minimum depth of all item roots
let minDepth = Infinity
for (const msgID of itemRoots) {
const depth = tangle.getDepth(msgID)
if (depth < minDepth) minDepth = depth
}
return cb(null, minDepth)
})
)
})
}
/**
@ -514,20 +562,27 @@ function initSet(peer, config) {
* @public
* @param {MsgID} ghostableMsgID
* @param {MsgID} tangleID
* @param {(err: Error | null, ghostable?: boolean) => void} cb
*/
function isGhostable(ghostableMsgID, tangleID) {
if (ghostableMsgID === tangleID) return false
function isGhostable(ghostableMsgID, tangleID, cb) {
if (ghostableMsgID === tangleID) return cb(null, false)
const msg = peer.db.get(ghostableMsgID)
// @ts-ignore
peer.db.get(ghostableMsgID, (err, msg) => {
if (err) return cb(err)
// prettier-ignore
if (!msg) throw new Error(`isGhostable() msgID "${ghostableMsgID}" does not exist in the database`)
// prettier-ignore
if (!msg) return cb(Error(`isGhostable() msgID "${ghostableMsgID}" does not exist in the database`))
const minItemRootDepth = minRequiredDepth(tangleID)
const minGhostDepth = minItemRootDepth - ghostSpan
const msgDepth = msg.metadata.tangles[tangleID].depth
if (minGhostDepth <= msgDepth && msgDepth < minItemRootDepth) return true
return false
minRequiredDepth(tangleID, (err, minItemRootDepth) => {
if (err) return cb(err)
const minGhostDepth = minItemRootDepth - ghostSpan
const msgDepth = msg.metadata.tangles[tangleID].depth
if (minGhostDepth <= msgDepth && msgDepth < minItemRootDepth) return cb(null, true)
return cb(null, false)
})
})
}
/**
@ -562,31 +617,37 @@ function initSet(peer, config) {
// TODO this error needs to be put into the `cb`, not thrown
assert(!!loadedAccountID, 'Cannot squeeze Set before loading')
const potential = _squeezePotential(subdomain)
if (potential < 1) return cb(null, false)
_squeezePotential(subdomain, (err, potential) => {
if (err) return cb(err)
loaded(() => {
// TODO this error needs to be put into the `cb`, not thrown
assert(!!loadedAccountID, 'Cannot squeeze Set before loading')
const domain = fromSubdomain(subdomain)
const currentSet = readSet(loadedAccountID, subdomain)
if (potential < 1) return cb(null, false)
const supersedes = []
const currentItemRoots = itemRoots.getAll(subdomain)
for (const item in currentItemRoots) {
supersedes.push(...currentItemRoots[item])
}
loaded(() => {
// TODO this error needs to be put into the `cb`, not thrown
assert(!!loadedAccountID, 'Cannot squeeze Set before loading')
const domain = fromSubdomain(subdomain)
readSet(loadedAccountID, subdomain, (err, currentSet) => {
if (err) return cb(err)
const data = { add: [...currentSet], del: [], supersedes }
peer.db.feed.publish(
{ account: loadedAccountID, domain, data },
(err, rec) => {
// prettier-ignore
if (err) return cb(new Error(`Failed to create msg when squeezing Set "${subdomain}"`, { cause: err }))
// @ts-ignore
cb(null, true)
}
)
const supersedes = []
const currentItemRoots = itemRoots.getAll(subdomain)
for (const item in currentItemRoots) {
supersedes.push(...currentItemRoots[item])
}
const data = { add: [...currentSet], del: [], supersedes }
peer.db.feed.publish(
{ account: loadedAccountID, domain, data },
// @ts-ignore
(err, rec) => {
// prettier-ignore
if (err) return cb(new Error(`Failed to create msg when squeezing Set "${subdomain}"`, { cause: err }))
// @ts-ignore
cb(null, true)
}
)
})
})
})
}
//#endregion

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@ -25,12 +25,14 @@
"node": ">=16"
},
"dependencies": {
"obz": "~1.1.0",
"pull-stream": "^3.7.0"
},
"devDependencies": {
"@types/pull-stream": "^3.6.7",
"bs58": "^5.0.0",
"c8": "7",
"obz": "~1.1.0",
"ppppp-db": "github:staltz/ppppp-db#667b33779d98aff12a9b0cd2d7c80469a95cd04e",
"ppppp-db": "https://codeberg.org/pzp/pzp-db/archive/master.tar.gz",
"ppppp-caps": "github:staltz/ppppp-caps#93fa810b9a40b78aef4872d4c2a8412cccb52929",
"ppppp-keypair": "github:staltz/ppppp-keypair#61ef4420578f450dc2cc7b1efc1c5a691a871c74",
"rimraf": "^4.4.0",

View File

@ -37,9 +37,9 @@ test('setup', async (t) => {
assert.equal(peer.set.getGhostSpan(), 4, 'getGhostSpan')
})
function lastMsgID() {
async function lastMsgID() {
let last
for (const item of peer.db.records()) {
for await (const item of peer.db.records()) {
last = item
}
return last.id
@ -56,10 +56,10 @@ test('Set add(), del(), has(), watch()', async (t) => {
const stopWatch = peer.set.watch((ev) => actualWatch.push(ev))
// Add 1st
assert.equal(peer.set.has('follows', '1st'), false, 'doesnt have 1st')
assert.equal(await p(peer.set.has)('follows', '1st', null), false, 'doesnt have 1st')
assert(await p(peer.set.add)('follows', '1st'), 'add 1st')
assert.equal(peer.set.has('follows', '1st'), true, 'has 1st')
add1 = lastMsgID()
assert.equal(await p(peer.set.has)('follows', '1st', null), true, 'has 1st')
add1 = await lastMsgID()
assert.deepEqual(
peer.set._getItemRoots('follows'),
{ '1st': [add1] },
@ -67,10 +67,10 @@ test('Set add(), del(), has(), watch()', async (t) => {
)
// Add 2nd
assert.equal(peer.set.has('follows', '2nd'), false, 'doesnt have 2nd')
assert.equal(await p(peer.set.has)('follows', '2nd', null), false, 'doesnt have 2nd')
assert(await p(peer.set.add)('follows', '2nd'), 'add 2nd')
assert.equal(peer.set.has('follows', '2nd'), true, 'has 2nd')
add2 = lastMsgID()
assert.equal(await p(peer.set.has)('follows', '2nd', null), true, 'has 2nd')
add2 = await lastMsgID()
assert.deepEqual(
peer.set._getItemRoots('follows'),
{ '1st': [add1], '2nd': [add2] },
@ -78,10 +78,10 @@ test('Set add(), del(), has(), watch()', async (t) => {
)
// Del 1st
assert.equal(peer.set.has('follows', '1st'), true, 'has 1st')
assert.equal(await p(peer.set.has)('follows', '1st', null), true, 'has 1st')
assert(await p(peer.set.del)('follows', '1st'), 'del 1st')
assert.equal(peer.set.has('follows', '1st'), false, 'doesnt have 1st')
del1 = lastMsgID()
assert.equal(await p(peer.set.has)('follows', '1st', null), false, 'doesnt have 1st')
del1 = await lastMsgID()
assert.deepEqual(
peer.set._getItemRoots('follows'),
{ '1st': [del1], '2nd': [add2] },
@ -93,10 +93,10 @@ test('Set add(), del(), has(), watch()', async (t) => {
assert.deepEqual(actualWatch, expectedWatch, 'watch() events')
// Add 3rd
assert.equal(peer.set.has('follows', '3rd'), false, 'doesnt have 3rd')
assert.equal(await p(peer.set.has)('follows', '3rd', null), false, 'doesnt have 3rd')
assert(await p(peer.set.add)('follows', '3rd'), 'add 3rd')
assert.equal(peer.set.has('follows', '3rd'), true, 'has 3rd')
add3 = lastMsgID()
assert.equal(await p(peer.set.has)('follows', '3rd', null), true, 'has 3rd')
add3 = await lastMsgID()
assert.deepEqual(
peer.set._getItemRoots('follows'),
{ '3rd': [add3], '2nd': [add2] },
@ -104,10 +104,10 @@ test('Set add(), del(), has(), watch()', async (t) => {
)
// Del 2nd
assert.equal(peer.set.has('follows', '2nd'), true, 'has 2nd')
assert.equal(await p(peer.set.has)('follows', '2nd', null), true, 'has 2nd')
assert(await p(peer.set.del)('follows', '2nd'), 'del 2nd') // msg seq 4
assert.equal(peer.set.has('follows', '2nd'), false, 'doesnt have 2nd')
del2 = lastMsgID()
assert.equal(await p(peer.set.has)('follows', '2nd', null), false, 'doesnt have 2nd')
del2 = await lastMsgID()
assert.deepEqual(
peer.set._getItemRoots('follows'),
{ '3rd': [add3], '2nd': [del2] },
@ -120,7 +120,7 @@ test('Set add(), del(), has(), watch()', async (t) => {
false,
'del 2nd idempotent'
)
assert.equal(peer.set.has('follows', '2nd'), false, 'doesnt have 2nd')
assert.equal(await p(peer.set.has)('follows', '2nd', null), false, 'doesnt have 2nd')
assert.deepEqual(
peer.set._getItemRoots('follows'),
{ '3rd': [add3], '2nd': [del2] },
@ -131,12 +131,12 @@ test('Set add(), del(), has(), watch()', async (t) => {
let add4, add5
test('Set values()', async (t) => {
assert(await p(peer.set.add)('follows', '4th'), 'add 4th')
add4 = lastMsgID()
add4 = await lastMsgID()
assert(await p(peer.set.add)('follows', '5th'), 'add 5th')
add5 = lastMsgID()
add5 = await lastMsgID()
const expected = new Set(['3rd', '4th', '5th'])
for (const item of peer.set.values('follows')) {
for (const item of await p(peer.set.values)('follows', null)) {
assert.equal(expected.has(item), true, 'values() item')
expected.delete(item)
}
@ -150,12 +150,12 @@ test('predsl Set squeeze', async (t) => {
'itemRoots before squeeze'
)
assert.equal(peer.set._squeezePotential('follows'), 3, 'squeezePotential=3')
assert.equal(await p(peer.set._squeezePotential)('follows'), 3, 'squeezePotential=3')
assert.equal(await p(peer.set.squeeze)('follows'), true, 'squeezed')
const squeezed = lastMsgID()
const squeezed = await lastMsgID()
assert.equal(peer.set._squeezePotential('follows'), 0, 'squeezePotential=0')
assert.equal(await p(peer.set._squeezePotential)('follows'), 0, 'squeezePotential=0')
assert.deepEqual(
peer.set._getItemRoots('follows'),
@ -168,17 +168,17 @@ test('predsl Set squeeze', async (t) => {
false,
'squeeze again idempotent'
)
const squeezed2 = lastMsgID()
const squeezed2 = await lastMsgID()
assert.equal(squeezed, squeezed2, 'squeezed msgID is same')
})
test('Set isGhostable', (t) => {
test('Set isGhostable', async (t) => {
const moot = MsgV4.createMoot(aliceID, 'set_v1__follows', aliceKeypair)
const mootID = MsgV4.getMsgID(moot)
assert.equal(mootID, peer.set.getFeedID('follows'), 'getFeedID')
const tangle = peer.db.getTangle(mootID)
const tangle = await p(peer.db.getTangle)(mootID)
const msgIDs = tangle.topoSort()
const itemRoots = peer.set._getItemRoots('follows')
@ -190,15 +190,15 @@ test('Set isGhostable', (t) => {
// Remember from the setup, that ghostSpan=4
assert.equal(msgIDs.length, 9)
assert.equal(peer.set.isGhostable(msgIDs[0], mootID), false) // moot
assert.equal(peer.set.isGhostable(msgIDs[1], mootID), false)
assert.equal(peer.set.isGhostable(msgIDs[2], mootID), false)
assert.equal(peer.set.isGhostable(msgIDs[3], mootID), false)
assert.equal(peer.set.isGhostable(msgIDs[4], mootID), true) // in ghostSpan
assert.equal(peer.set.isGhostable(msgIDs[5], mootID), true) // in ghostSpan
assert.equal(peer.set.isGhostable(msgIDs[6], mootID), true) // in ghostSpan
assert.equal(peer.set.isGhostable(msgIDs[7], mootID), true) // in ghostSpan
assert.equal(peer.set.isGhostable(msgIDs[8], mootID), false) // item root
assert.equal(await p(peer.set.isGhostable)(msgIDs[0], mootID), false) // moot
assert.equal(await p(peer.set.isGhostable)(msgIDs[1], mootID), false)
assert.equal(await p(peer.set.isGhostable)(msgIDs[2], mootID), false)
assert.equal(await p(peer.set.isGhostable)(msgIDs[3], mootID), false)
assert.equal(await p(peer.set.isGhostable)(msgIDs[4], mootID), true) // in ghostSpan
assert.equal(await p(peer.set.isGhostable)(msgIDs[5], mootID), true) // in ghostSpan
assert.equal(await p(peer.set.isGhostable)(msgIDs[6], mootID), true) // in ghostSpan
assert.equal(await p(peer.set.isGhostable)(msgIDs[7], mootID), true) // in ghostSpan
assert.equal(await p(peer.set.isGhostable)(msgIDs[8], mootID), false) // item root
})
test('teardown', async (t) => {