Running out of memory trying to create a leveldb

error

<--- Last few GCs --->

[6881:0x103000000]    34771 ms: Mark-sweep 1412.6 (1464.8) -> 1412.5 (1448.8) MB, 2903.0 / 0.0 ms  (+ 0.0 ms in 0 steps since start of marking, biggest step 0.0 ms, walltime since start of marking 2903 ms) last resort 
[6881:0x103000000]    37852 ms: Mark-sweep 1412.5 (1448.8) -> 1412.5 (1448.8) MB, 3081.4 / 0.0 ms  last resort 


<--- JS stacktrace --->

==== JS stack trace =========================================

Security context: 0xc56e9a1cef1 <JSObject>
    1: /* anonymous */ [/Users/z/git/nice-registry/sourceranks/script/seed.js:~1] [pc=0x270c82c5578b](this=0x2bc139c78cb1 <Object map = 0x3cfd43f04829>,exports=0x2bc139c78cb1 <Object map = 0x3cfd43f04829>,require=0x2bc139c78c69 <JSFunction require (sfi = 0x18c6c30ad439)>,module=0x2bc139c78c19 <Module map = 0x3cfd43f41761>,__filename=0x18c6c30c1909 <String[53]: /Users/z/git/nice-registry/sourceran...

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
 1: node::Abort() [/usr/local/bin/node]
 2: node::FatalException(v8::Isolate*, v8::Local<v8::Value>, v8::Local<v8::Message>) [/usr/local/bin/node]
 3: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [/usr/local/bin/node]
 4: v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) [/usr/local/bin/node]
 5: v8::internal::Runtime_AllocateInTargetSpace(int, v8::internal::Object**, v8::internal::Isolate*) [/usr/local/bin/node]
 6: 0x270c82b040dd
zsh: abort      node script/seed.js

level-seed-db.js

#!/usr/bin/env node

const names = require('all-the-package-names')
const level = require('level')
const db = level('./db')

for (name of names) {
  addName(name)
}

async function addName (name) {
  console.log(name)
  const data = {
    name: name,
    updatedAt: null
  }
  await db.put(name, JSON.stringify(data, null, 2))
}