Compatibility · current main

Support,
item by item.

A searchable inventory of what passes, what is partial, and what only exists to let real dependency graphs load.

Use Ctrl + F for Response#json, node:fs#readFileSync, or ReadableStream#pipeTo.

Read the labels literally

No umbrella claims.

A passing file is evidence for that file. A recognized module is not the whole Node.js module. The inventory names exact exposed APIs and keeps its pinned WPT revision visible so gaps remain visible.

Full file

Every subtest passes

The complete pinned WPT file passes in the canonical compiled/normal run, without an expected-failure suppression.

Partial surface

A functional Node.js slice

The listed exports are implemented for current applications and fixtures; unlisted module APIs are not claimed.

Shape-only stub

Loads, then fails clearly

Enough module shape exists for dependency initialization. Core operations are unavailable or deliberately inert.

Web Platform Tests

Fully passing files.

This is curated coverage, not full web-platform compliance. Every API row is backed by complete passing test files; each surrounding API still has behavior and WPT files outside this inventory.

Pinned WPT revision f0b30d60daf6a64a3b087d66732c54c8e5273dbd canonical backend: compiled · mode: normal · expectations: none

DOM events and aborts

6 API slices

API	Status
`AbortSignal#any`	Partial implementation
`AbortSignal#timeout`	Partial implementation
`AbortSignal#event`	Partial implementation
`EventTarget#addEventListener`	Partial implementation
`Event#constructor`	Partial implementation
`Event#isTrusted`	Partial implementation

Encoding

2 API slices

API	Status
`TextDecoder#decode`	Partial implementation
`TextEncoder#encode`	Partial implementation

Fetch primitives

9 API slices

API	Status
`Headers#constructor`	Partial implementation
`Request#constructor`	Partial implementation
`Request#clone`	Partial implementation
`Request#arrayBuffer`	Partial implementation
`Response#constructor`	Partial implementation
`Response#arrayBuffer`	Partial implementation
`Response#error`	Partial implementation
`Response#json`	Partial implementation
`Response#redirect`	Partial implementation

Timers

4 API slices

API	Status
`setTimeout`	Partial implementation
`clearTimeout`	Partial implementation
`setInterval`	Partial implementation
`clearInterval`	Partial implementation

Streams

17 API slices

API	Status
`ReadableStream#constructor`	Partial implementation
`ReadableStream byte sources`	Partial implementation
`ReadableStreamBYOBReader#read`	Partial implementation
`ReadableByteStreamController#byobRequest`	Partial implementation
`ReadableByteStreamController#enqueue`	Partial implementation
`ReadableStreamBYOBRequest#respond`	Partial implementation
`ReadableStream#pipeTo`	Partial implementation
`ReadableStream#pipeThrough`	Partial implementation
`ReadableStream#cancel`	Partial implementation
`ReadableStream#getReader`	Partial implementation
`ReadableStream#tee`	Partial implementation
`ReadableStream#values / @@asyncIterator`	Partial implementation
`ReadableStream.from`	Partial implementation
`WritableStream#constructor`	Partial implementation
`WritableStream#error`	Partial implementation
`WritableStream#writer`	Partial implementation
`CountQueuingStrategy#constructor`	Partial implementation

URL

15 API slices

API	Status
`URL#searchParams`	Partial implementation
`URL#canParse`	Partial implementation
`URL#parse`	Partial implementation
`URL#toJSON`	Partial implementation
`URLSearchParams#constructor`	Partial implementation
`URLSearchParams#append`	Partial implementation
`URLSearchParams#delete`	Partial implementation
`URLSearchParams#forEach`	Partial implementation
`URLSearchParams#get`	Partial implementation
`URLSearchParams#getAll`	Partial implementation
`URLSearchParams#has`	Partial implementation
`URLSearchParams#set`	Partial implementation
`URLSearchParams#size`	Partial implementation
`URLSearchParams#sort`	Partial implementation
`URLSearchParams#toString`	Partial implementation

High Resolution Time

2 API slices

API	Status
`performance#now`	Partial implementation
`performance#timeOrigin`	Partial implementation

Node.js compatibility

Curated, not drop-in.

Each module gets its own table and each named export gets an API row. Semantics are developed against focused fixtures and real application paths—not the full Node.js conformance surface.

`node:assert`

14 recognized APIs · default export

API	Status
`node:assert#AssertionError`	Partial implementation
`node:assert#deepEqual`	Partial implementation
`node:assert#deepStrictEqual`	Partial implementation
`node:assert#doesNotMatch`	Partial implementation
`node:assert#equal`	Partial implementation
`node:assert#fail`	Partial implementation
`node:assert#ifError`	Partial implementation
`node:assert#match`	Partial implementation
`node:assert#notDeepEqual`	Partial implementation
`node:assert#notDeepStrictEqual`	Partial implementation
`node:assert#notEqual`	Partial implementation
`node:assert#notStrictEqual`	Partial implementation
`node:assert#ok`	Partial implementation
`node:assert#strictEqual`	Partial implementation

`node:assert/strict`

13 recognized APIs · default export

API	Status
`node:assert/strict#deepEqual`	Partial implementation
`node:assert/strict#deepStrictEqual`	Partial implementation
`node:assert/strict#doesNotMatch`	Partial implementation
`node:assert/strict#equal`	Partial implementation
`node:assert/strict#fail`	Partial implementation
`node:assert/strict#ifError`	Partial implementation
`node:assert/strict#match`	Partial implementation
`node:assert/strict#notDeepEqual`	Partial implementation
`node:assert/strict#notDeepStrictEqual`	Partial implementation
`node:assert/strict#notEqual`	Partial implementation
`node:assert/strict#notStrictEqual`	Partial implementation
`node:assert/strict#ok`	Partial implementation
`node:assert/strict#strictEqual`	Partial implementation

`node:async_hooks`

2 recognized APIs · default export

API	Status
`node:async_hooks#AsyncLocalStorage`	Partial implementation
`node:async_hooks#AsyncResource`	Partial implementation

`node:buffer`

2 recognized APIs · default export

API	Status
`node:buffer#Buffer`	Partial implementation
`node:buffer#constants`	Partial implementation

`node:child_process`

4 recognized APIs

API	Status
`node:child_process#exec`	Shape-only stub
`node:child_process#execFile`	Shape-only stub
`node:child_process#execFileSync`	Partial implementation
`node:child_process#spawn`	Shape-only stub

`node:cluster`

9 recognized APIs · default export

API	Status
`node:cluster#fork`	Shape-only stub
`node:cluster#isMaster`	Shape-only stub
`node:cluster#isPrimary`	Shape-only stub
`node:cluster#isWorker`	Shape-only stub
`node:cluster#on`	Shape-only stub
`node:cluster#once`	Shape-only stub
`node:cluster#setMaxListeners`	Shape-only stub
`node:cluster#worker`	Shape-only stub
`node:cluster#workers`	Shape-only stub

`node:crypto`

15 recognized APIs · default export

API	Status
`node:crypto#X509Certificate`	Shape-only stub
`node:crypto#argon2`	Partial implementation
`node:crypto#argon2Sync`	Partial implementation
`node:crypto#createHash`	Partial implementation
`node:crypto#createHmac`	Partial implementation
`node:crypto#createSign`	Shape-only stub
`node:crypto#createVerify`	Shape-only stub
`node:crypto#generateKeyPairSync`	Shape-only stub
`node:crypto#hash`	Partial implementation
`node:crypto#pbkdf2Sync`	Partial implementation
`node:crypto#publicEncrypt`	Shape-only stub
`node:crypto#randomBytes`	Partial implementation
`node:crypto#randomInt`	Partial implementation
`node:crypto#randomUUID`	Partial implementation
`node:crypto#timingSafeEqual`	Partial implementation

`node:diagnostics_channel`

5 recognized APIs · default export

API	Status
`node:diagnostics_channel#channel`	Partial implementation
`node:diagnostics_channel#hasSubscribers`	Partial implementation
`node:diagnostics_channel#subscribe`	Partial implementation
`node:diagnostics_channel#tracingChannel`	Partial implementation
`node:diagnostics_channel#unsubscribe`	Partial implementation

`node:dns`

11 recognized APIs · default export

API	Status
`node:dns#CONNREFUSED`	Shape-only stub
`node:dns#NODATA`	Shape-only stub
`node:dns#NOTFOUND`	Shape-only stub
`node:dns#NOTIMP`	Shape-only stub
`node:dns#REFUSED`	Shape-only stub
`node:dns#Resolver`	Shape-only stub
`node:dns#SERVFAIL`	Shape-only stub
`node:dns#lookup`	Shape-only stub
`node:dns#resolve`	Shape-only stub
`node:dns#resolve4`	Shape-only stub
`node:dns#resolve6`	Shape-only stub

`node:domain`

2 recognized APIs · default export

API	Status
`node:domain#active`	Shape-only stub
`node:domain#create`	Shape-only stub

`node:events`

2 recognized APIs · default export

API	Status
`node:events#EventEmitter`	Partial implementation
`node:events#errorMonitor`	Partial implementation

`node:fs`

37 recognized APIs · default export

API	Status
`node:fs#Stats`	Partial implementation
`node:fs#accessSync`	Partial implementation
`node:fs#appendFileSync`	Partial implementation
`node:fs#chmodSync`	Partial implementation
`node:fs#closeSync`	Partial implementation
`node:fs#copyFileSync`	Partial implementation
`node:fs#createReadStream`	Partial implementation
`node:fs#constants`	Partial implementation
`node:fs#existsSync`	Partial implementation
`node:fs#fstatSync`	Partial implementation
`node:fs#fsyncSync`	Partial implementation
`node:fs#ftruncateSync`	Partial implementation
`node:fs#link`	Partial implementation
`node:fs#linkSync`	Partial implementation
`node:fs#lstatSync`	Partial implementation
`node:fs#mkdirSync`	Partial implementation
`node:fs#mkdtempSync`	Partial implementation
`node:fs#openSync`	Partial implementation
`node:fs#readFile`	Partial implementation
`node:fs#readFileSync`	Partial implementation
`node:fs#readlink`	Partial implementation
`node:fs#readlinkSync`	Partial implementation
`node:fs#readSync`	Partial implementation
`node:fs#readdir`	Partial implementation
`node:fs#readdirSync`	Partial implementation
`node:fs#realpathSync`	Partial implementation
`node:fs#renameSync`	Partial implementation
`node:fs#rmSync`	Partial implementation
`node:fs#statSync`	Partial implementation
`node:fs#stat`	Partial implementation
`node:fs#symlink`	Partial implementation
`node:fs#symlinkSync`	Partial implementation
`node:fs#unlinkSync`	Partial implementation
`node:fs#utimesSync`	Partial implementation
`node:fs#write`	Partial implementation
`node:fs#writeFileSync`	Partial implementation
`node:fs#writeSync`	Partial implementation

`node:fs/promises`

15 recognized APIs · default export

API	Status
`node:fs/promises#appendFile`	Partial implementation
`node:fs/promises#copyFile`	Partial implementation
`node:fs/promises#link`	Partial implementation
`node:fs/promises#lstat`	Partial implementation
`node:fs/promises#mkdir`	Partial implementation
`node:fs/promises#open`	Partial implementation
`node:fs/promises#readFile`	Partial implementation
`node:fs/promises#readlink`	Partial implementation
`node:fs/promises#readdir`	Partial implementation
`node:fs/promises#rename`	Partial implementation
`node:fs/promises#rm`	Partial implementation
`node:fs/promises#stat`	Partial implementation
`node:fs/promises#symlink`	Partial implementation
`node:fs/promises#unlink`	Partial implementation
`node:fs/promises#writeFile`	Partial implementation

`node:http`

13 recognized APIs · default export

API	Status
`node:http#Agent`	Partial implementation
`node:http#METHODS`	Partial implementation
`node:http#STATUS_CODES`	Partial implementation
`node:http#IncomingMessage`	Partial implementation
`node:http#ServerResponse`	Partial implementation
`node:http#Server`	Partial implementation
`node:http#ClientRequest`	Partial implementation
`node:http#createServer`	Partial implementation
`node:http#get`	Partial implementation
`node:http#globalAgent`	Partial implementation
`node:http#request`	Partial implementation
`node:http#validateHeaderName`	Partial implementation
`node:http#validateHeaderValue`	Partial implementation

`node:http2`

1 recognized API · default export

API	Status
`node:http2#connect`	Shape-only stub

`node:https`

4 recognized APIs · default export

API	Status
`node:https#Agent`	Shape-only stub
`node:https#get`	Shape-only stub
`node:https#globalAgent`	Shape-only stub
`node:https#request`	Shape-only stub

`node:inspector`

4 recognized APIs · default export

API	Status
`node:inspector#Session`	Shape-only stub
`node:inspector#close`	Shape-only stub
`node:inspector#open`	Shape-only stub
`node:inspector#url`	Shape-only stub

`node:module`

3 recognized APIs · default export

API	Status
`node:module#builtinModules`	Partial implementation
`node:module#createRequire`	Partial implementation
`node:module#isBuiltin`	Partial implementation

`node:net`

4 recognized APIs · default export

API	Status
`node:net#Socket`	Partial implementation
`node:net#connect`	Partial implementation
`node:net#createConnection`	Partial implementation
`node:net#isIP`	Partial implementation

`node:os`

19 recognized APIs · default export

API	Status
`node:os#EOL`	Partial implementation
`node:os#arch`	Partial implementation
`node:os#availableParallelism`	Partial implementation
`node:os#cpus`	Partial implementation
`node:os#devNull`	Partial implementation
`node:os#endianness`	Partial implementation
`node:os#freemem`	Partial implementation
`node:os#homedir`	Partial implementation
`node:os#hostname`	Partial implementation
`node:os#loadavg`	Partial implementation
`node:os#machine`	Partial implementation
`node:os#platform`	Partial implementation
`node:os#release`	Partial implementation
`node:os#tmpdir`	Partial implementation
`node:os#totalmem`	Partial implementation
`node:os#type`	Partial implementation
`node:os#uptime`	Partial implementation
`node:os#userInfo`	Partial implementation
`node:os#version`	Partial implementation

`node:path`

14 recognized APIs · default export

API	Status
`node:path#basename`	Partial implementation
`node:path#delimiter`	Partial implementation
`node:path#dirname`	Partial implementation
`node:path#extname`	Partial implementation
`node:path#format`	Partial implementation
`node:path#isAbsolute`	Partial implementation
`node:path#join`	Partial implementation
`node:path#normalize`	Partial implementation
`node:path#parse`	Partial implementation
`node:path#posix`	Partial implementation
`node:path#relative`	Partial implementation
`node:path#resolve`	Partial implementation
`node:path#sep`	Partial implementation
`node:path#toNamespacedPath`	Partial implementation

`node:perf_hooks`

2 recognized APIs · default export

API	Status
`node:perf_hooks#monitorEventLoopDelay`	Shape-only stub
`node:perf_hooks#performance`	Partial implementation

`node:process`

30 recognized APIs · default export

API	Status
`node:process#addListener`	Partial implementation
`node:process#arch`	Partial implementation
`node:process#argv`	Partial implementation
`node:process#cwd`	Partial implementation
`node:process#emit`	Partial implementation
`node:process#emitWarning`	Partial implementation
`node:process#env`	Partial implementation
`node:process#execPath`	Partial implementation
`node:process#eventNames`	Partial implementation
`node:process#exit`	Partial implementation
`node:process#getMaxListeners`	Partial implementation
`node:process#hrtime`	Partial implementation
`node:process#kill`	Partial implementation
`node:process#listenerCount`	Partial implementation
`node:process#listeners`	Partial implementation
`node:process#nextTick`	Partial implementation
`node:process#off`	Partial implementation
`node:process#on`	Partial implementation
`node:process#once`	Partial implementation
`node:process#pid`	Partial implementation
`node:process#platform`	Partial implementation
`node:process#prependListener`	Partial implementation
`node:process#prependOnceListener`	Partial implementation
`node:process#rawListeners`	Partial implementation
`node:process#removeAllListeners`	Partial implementation
`node:process#removeListener`	Partial implementation
`node:process#setMaxListeners`	Partial implementation
`node:process#stderr`	Partial implementation
`node:process#stdout`	Partial implementation
`node:process#versions`	Partial implementation

`node:querystring`

7 recognized APIs · default export

API	Status
`node:querystring#decode`	Partial implementation
`node:querystring#encode`	Partial implementation
`node:querystring#escape`	Partial implementation
`node:querystring#parse`	Partial implementation
`node:querystring#stringify`	Partial implementation
`node:querystring#unescape`	Partial implementation
`node:querystring#unescapeBuffer`	Partial implementation

`node:readline`

1 recognized API · default export

API	Status
`node:readline#createInterface`	Shape-only stub

`node:sqlite`

2 recognized APIs · default export

API	Status
`node:sqlite#DatabaseSync`	Partial implementation
`node:sqlite#StatementSync`	Partial implementation

`node:stream`

9 recognized APIs · default export

API	Status
`node:stream#Stream`	Partial implementation
`node:stream#Readable`	Partial implementation
`node:stream#Writable`	Partial implementation
`node:stream#Duplex`	Partial implementation
`node:stream#Transform`	Partial implementation
`node:stream#PassThrough`	Partial implementation
`node:stream#finished`	Partial implementation
`node:stream#pipeline`	Shape-only stub
`node:stream#promises`	Partial implementation

`node:stream/promises`

2 recognized APIs · default export

API	Status
`node:stream/promises#finished`	Partial implementation
`node:stream/promises#pipeline`	Partial implementation

`node:string_decoder`

1 recognized API · default export

API	Status
`node:string_decoder#StringDecoder`	Partial implementation

`node:timers/promises`

1 recognized API · default export

API	Status
`node:timers/promises#setTimeout`	Partial implementation

`node:tls`

1 recognized API · default export

API	Status
`node:tls#connect`	Partial implementation

`node:tty`

3 recognized APIs · default export

API	Status
`node:tty#ReadStream`	Partial implementation
`node:tty#WriteStream`	Partial implementation
`node:tty#isatty`	Partial implementation

`node:url`

7 recognized APIs · default export

API	Status
`node:url#URL`	Partial implementation
`node:url#Url`	Partial implementation
`node:url#fileURLToPath`	Partial implementation
`node:url#format`	Partial implementation
`node:url#parse`	Partial implementation
`node:url#pathToFileURL`	Partial implementation
`node:url#urlToHttpOptions`	Shape-only stub

`node:util`

21 recognized APIs · default export

API	Status
`node:util#deprecate`	Partial implementation
`node:util#debuglog`	Partial implementation
`node:util#format`	Partial implementation
`node:util#formatWithOptions`	Partial implementation
`node:util#inherits`	Partial implementation
`node:util#inspect`	Partial implementation
`node:util#isArray`	Partial implementation
`node:util#isBoolean`	Partial implementation
`node:util#isBuffer`	Partial implementation
`node:util#isFunction`	Partial implementation
`node:util#isNull`	Partial implementation
`node:util#isNullOrUndefined`	Partial implementation
`node:util#isNumber`	Partial implementation
`node:util#isObject`	Partial implementation
`node:util#isString`	Partial implementation
`node:util#isSymbol`	Partial implementation
`node:util#isUndefined`	Partial implementation
`node:util#parseArgs`	Partial implementation
`node:util#parseEnv`	Partial implementation
`node:util#promisify`	Partial implementation
`node:util#types`	Partial implementation

`node:v8`

1 recognized API · default export

API	Status
`node:v8#setFlagsFromString`	Partial implementation

`node:vm`

1 recognized API · default export

API	Status
`node:vm#runInNewContext`	Partial implementation

`node:worker_threads`

9 recognized APIs · default export

API	Status
`node:worker_threads#MessageChannel`	Shape-only stub
`node:worker_threads#SHARE_ENV`	Shape-only stub
`node:worker_threads#Worker`	Shape-only stub
`node:worker_threads#isMainThread`	Shape-only stub
`node:worker_threads#markAsUncloneable`	Shape-only stub
`node:worker_threads#parentPort`	Shape-only stub
`node:worker_threads#receiveMessageOnPort`	Shape-only stub
`node:worker_threads#threadId`	Shape-only stub
`node:worker_threads#workerData`	Shape-only stub

`node:zlib`

6 recognized APIs · default export

API	Status
`node:zlib#constants`	Partial implementation
`node:zlib#createBrotliDecompress`	Partial implementation
`node:zlib#createGunzip`	Partial implementation
`node:zlib#createGzip`	Shape-only stub
`node:zlib#createInflate`	Partial implementation
`node:zlib#deflate`	Shape-only stub

Full Node.js built-ins claimed

None. Even the broadest modules above expose a deliberate subset. Native addons using N-API are outside this compatibility layer.

Support,item by item.

No umbrella claims.

Every subtest passes

A functional Node.js slice

Loads, then fails clearly

Fully passing files.

DOM events and aborts

Encoding

Fetch primitives

Timers

Streams

URL

High Resolution Time

Curated, not drop-in.

node:assert

node:assert/strict

node:async_hooks

node:buffer

node:child_process

node:cluster

node:crypto

node:diagnostics_channel

node:dns

node:domain

node:events

node:fs

node:fs/promises

node:http

node:http2

node:https

node:inspector

node:module

node:net

node:os

node:path

node:perf_hooks

node:process

node:querystring

node:readline

node:sqlite

node:stream

node:stream/promises

node:string_decoder

node:timers/promises

node:tls

node:tty

node:url

node:util

node:v8

node:vm

node:worker_threads

node:zlib

Full Node.js built-ins claimed

Support,
item by item.

`node:assert`

`node:assert/strict`

`node:async_hooks`

`node:buffer`

`node:child_process`

`node:cluster`

`node:crypto`

`node:diagnostics_channel`

`node:dns`

`node:domain`

`node:events`

`node:fs`

`node:fs/promises`

`node:http`

`node:http2`

`node:https`

`node:inspector`

`node:module`

`node:net`

`node:os`

`node:path`

`node:perf_hooks`

`node:process`

`node:querystring`

`node:readline`

`node:sqlite`

`node:stream`

`node:stream/promises`

`node:string_decoder`

`node:timers/promises`

`node:tls`

`node:tty`

`node:url`

`node:util`

`node:v8`

`node:vm`

`node:worker_threads`

`node:zlib`