WebAssembly version of DuckDB

Last update: Jan 8, 2023

Overview

DuckDB-Wasm

DuckDB-Wasm is an in-process analytical SQL database for the browser. It is powered by WebAssembly, speaks Arrow fluently, reads Parquet, CSV and JSON files backed by Filesystem APIs or HTTP requests and has been tested with Chrome, Firefox, Safari and Node.js. Read the launch blog post.

Try it out at shell.duckdb.org and on Observable and read the API documentation.

DuckDB-Wasm is fast! If you're here for performance numbers, head over to our benchmarks.

Repository Structure

Subproject	Description	Language
duckdb_wasm	Wasm Library	C++
@duckdb/duckdb-wasm	Typescript API	Typescript
@duckdb/duckdb-wasm-shell	SQL Shell	Rust
@duckdb/benchmarks	Benchmarks	Typescript

Comments

apache-arrow marked as external dependency

Hello folks ~

So thrilled to experiment w/ duckdb-wasm! Thank you for all your hard work.

I'm having a bit of trouble bundling duckdb-wasm in a simple case. I'm using Rollup and opting for the simplest possible input file:

import * as duckdb from "@duckdb/duckdb-wasm/dist/duckdb-esm";
const JSDELIVR_BUNDLES = duckdb.getJsDelivrBundles();
console.log("resolving bundles");
async function resolve() {
  // Select a bundle based on browser checks
  const bundle = await duckdb.selectBundle(JSDELIVR_BUNDLES);
  // Instantiate the asynchronus version of DuckDB-Wasm
  const worker = new Worker(bundle.mainWorker);
  const logger = new duckdb.ConsoleLogger();
  const db = new duckdb.AsyncDuckDB(logger, worker);
  return await db.instantiate(bundle.mainModule, bundle.pthreadWorker);
}

(async () => {
  const db = await resolve();
  console.log(db);
})();

But rollup produces this error:

rollup v2.59.0
bundles src/main.js → public/poc.js...
(!) Unresolved dependencies
https://rollupjs.org/guide/en/#warning-treating-module-as-external-dependency
apache-arrow (imported by node_modules/@duckdb/duckdb-wasm/dist/duckdb-esm.js)
(!) Missing global variable name
Use output.globals to specify browser global variable names corresponding to external modules
apache-arrow (guessing 'apacheArrow')

Here is a repository that hopefully reproduces this (including my rollup file, includes instructions): https://github.com/hamilton/duckdb-wasm-issues

Is there something obvious that I'm missing here? (There usually is!)

examples

opened by hamilton 22

export database error

Hi. I am using duckdb-wasm in pure javascript.

Refered to https://observablehq.com/@cmudig/[email protected]/duckdb .

when i use export database '/out/localdb', i am getting error: "Not implemented Error: BufferedFileSystem: DirectoryExists is not implemented!".

Please give me solution.
library

opened by luckyfanghe 22
Feature/s3 fs

hey @ankoh here's the s3fs for reading. I've done my best to write enough meaningful test without requiring any mocking or s3 server emulating, but there's tests that really only work with an s3 server. I think for now its okay though and in line with DuckDB, we could later look into mocking s3 or using something like s3rver to make the tests more solid.

opened by samansmink 15
date_part is not working with DuckDBClient in ObservableHQ [RangeError: Maximum call stack size exceeded.]

@domoritz The following example from web page is not working in ObservableHQ with Safari or Chrome/IOS: SELECT date_part('minute', TIMESTAMP '1992-09-20 20:38:40') and it’s working in shell.duckdb.org

opened by kimmolinna 12
Timestamp fields returned as JavaScript Dates?

It would be great if the client could convert timestamp fields to native JavaScript Date objects instead of the millisecond value.

Here is an example using both a parquet file and a csv file articulating the ask: https://observablehq.com/@observablehq/duckdb-date-types

opened by enjalot 12
Suggested way to handle read-only concurrency
In the use case that I have a query that I saved as a materialized view -- or let's just say a table called SavedQuery. Let's say I want to grab some statistics for each column, and there are ten columns. So the queries that I run are:

SELECT <info> FROM SavedQuery GROUP BY <field1> SELECT <info> FROM SavedQuery GROUP BY <field2> ...

In the case that I run all ten queries in parallel (or whatever batch size I decide to use), what is the suggested way to run these queries concurrently?
opened by david542542 11
Online shell font looks weird
What happens?

The rendering of the https://shell.duckdb.org/ shell font looks odd.

To Reproduce

Open https://shell.duckdb.org/.

Environment (please complete the following information):

OS: Arch Linux

Browser Version: Brave Browser 99.1.36.112
opened by davidgasquez 10
not working examples for bare-browser and esbuild-browser

when I try to run examples for those two projects ( bare-browser and esbuild-browser), I get errors. I cloned whole project and tried to run it. Can someone give more info about it?

Also, can someone point me to working example for react and vanilla JS front-end project?

opened by uros87 10
[Question] Wondering about serial HTTP range requests

Hey guys, first just wanted to say, amazing work on this library, it's really impressive and I'm excited both to try things myself and to see what everyone else ends up doing with it 🙂

Anyways, this isn't an ISSUE so much as a QUESTION, something for my curiosity, so no worries if you don't get back to it for a while, or at all -- just figured I'd ask since I think it's interesting, hope that's ok.

So I wanted to play around a bit in the shell, and I uploaded a parquet file (a common one, a subset of the NYC taxi ride dataset, about 500MB in total) to a public S3 bucket and set the CORS so that it could be read by shell.duckdb.org. Then, I went to try out a few queries on the remote data file:

First of all, I want to say again this is just amazing -- it pulled less then 30MB to answer an analytical query like this on a 500MB dataset, just blows my mind 💯

But secondly -- it's kinda slow! That query took over a minute to come back, most of it seeming to be network. To confirm, I opened up the devtools and checked the network, and saw a whole bunch of tiny sequential range requests that seemed to be making sure we couldn't get too much work done at once:

So, I guess the TL;DR is that I want to know more about these! I'm guessing they can't "just" be fully parallelized, i.e. we need information from the last response in order to know what the next request looks like. But, maybe we could make fewer of these calls if we could increase the byte request size when the parquet is large? Or implement some kind of batching? Since this was the only hitch I ran into in an otherwise really cool experiment, I just wanted to hear your thoughts or plans.

Thanks a lot in advance, both for looking at my question and for building this in the first place!

opened by pickledish 10
Interval type unsupported in query output
Interval Type is not working as expected.

Query SELECT INTERVAL '3' MONTH AS interval

on shell.duckdb.org: outputs an empty line.

on DuckDB cli it returns:

┌──────────┐ │ interval │ ├──────────┤ │ 3 months │ └──────────┘

Reason for this appears to be that DuckDB sets the type for Interval to the Duration type ("tdm" type from arrow c data interface docs). The Interval is converted to milliseconds in DuckDB. The duration type that is emitted by DuckDB, is not supported in Arrow JS.

~The most likely option seems to be for DuckDB to emit an Interval type that JS does support. There seems to be some support for Intervals as the type is listed in the docs. If DuckDB emits interval [days, time] for the interval type DuckDB-WASM would be able to support intervals.~

(edit) Just discussed the possibility of emitting arrow interval types from DuckDB with mark, the problem is that the interval types of DuckDB and and arrow are not compatible. The best solution now seems to wait for the Duration type to be implemented in Arrow JS.
opened by samansmink 8
are parameterized queries supported?

from what I can tell I can't do something like conn.query("select * from test where field = $1", myVariable)

is this not supported within DuckDB or just not exposed in the bindings?

opened by enjalot 8
chore(deps-dev): bump @typescript-eslint/parser from 5.45.0 to 5.48.0
Bumps @typescript-eslint/parser from 5.45.0 to 5.48.0.

Release notes

Sourced from @typescript-eslint/parser's releases.

v5.48.0

5.48.0 (2023-01-02)

Bug Fixes

website: fix typo (#6285) (3f8d105)

Features

eslint-plugin: specify which method is unbound and added test case (#6281) (cf3ffdd)

v5.47.1

5.47.1 (2022-12-26)

Bug Fixes

ast-spec: correct some incorrect ast types (#6257) (0f3f645)

eslint-plugin: [member-ordering] correctly invert optionalityOrder (#6256) (ccd45d4)

v5.47.0

5.47.0 (2022-12-19)

Features

eslint-plugin: [no-floating-promises] add suggestion fixer to add an 'await' (#5943) (9e35ef9)

v5.46.1

5.46.1 (2022-12-12)

Note: Version bump only for package @typescript-eslint/typescript-eslint

v5.46.0

5.46.0 (2022-12-08)

Bug Fixes

eslint-plugin: [ban-types] update message to suggest object instead of Record<string, unknown> (#6079) (d91a5fc)

Features

eslint-plugin: [prefer-nullish-coalescing] logic and test for strict null checks (#6174) (8a91cbd)

v5.45.1

5.45.1 (2022-12-05)

... (truncated)

Changelog

Sourced from @typescript-eslint/parser's changelog.

5.48.0 (2023-01-02)

Note: Version bump only for package @typescript-eslint/parser

5.47.1 (2022-12-26)

Note: Version bump only for package @typescript-eslint/parser

5.47.0 (2022-12-19)

Note: Version bump only for package @typescript-eslint/parser

5.46.1 (2022-12-12)

Note: Version bump only for package @typescript-eslint/parser

5.46.0 (2022-12-08)

Note: Version bump only for package @typescript-eslint/parser

5.45.1 (2022-12-05)

Bug Fixes

parser: remove the jsx option requirement for automatic jsx pragma resolution (#6134) (e777f5e)

Commits

4ab9bd7 chore: publish v5.48.0

6ffce79 chore: publish v5.47.1

a2c08ba chore: publish v5.47.0

c943b84 chore: publish v5.46.1

47241bb docs: overhaul branding and add new logo (#6147)

1e1573a chore: publish v5.46.0

2d0a883 chore: publish v5.45.1

46c14cd chore: use short form for nx project names (#6160)

0b37822 chore: bump Nx to 15 (#6140)

e777f5e fix(parser): remove the jsx option requirement for automatic jsx pragma resol...

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dependencies javascript
opened by dependabot[bot] 0
fix(deps): bump immutable from 4.1.0 to 4.2.1
Bumps immutable from 4.1.0 to 4.2.1.

Release notes

Sourced from immutable's releases.

v4.2.1

What's Changed

[Typescript] rollback some of the change on toJS to avoir circular reference by @jdeniau in immutable-js/immutable-js#1922

Full Changelog: https://github.com/immutable-js/immutable-js/compare/v4.2.0...v4.2.1

v4.2.0

Added a partition method to all containers #1916 by johnw42

[TypeScript] Better type for toJS #1917 by jdeniau

[TS Minor Break] tests are ran with TS > 4.5 only. It was tested with TS > 2.1 previously, but we want to level up TS types with recent features. TS 4.5 has been released more than one year before this release. If it does break your implementation (it might not), you should probably consider upgrading to the latest TS version.

Changelog

Sourced from immutable's changelog.

[4.2.1] - 2022-12-23

[Typescript] rollback some of the change on toJS to avoir circular reference

[4.2.0] - 2022-12-22

[TypeScript] Better type for toJS #1917 by jdeniau

[TS Minor Break] tests are ran with TS > 4.5 only. It was tested with TS > 2.1 previously, but we want to level up TS types with recent features. TS 4.5 has been released more than one year before this release. If it does break your implementation (it might not), you should probably consider upgrading to the latest TS version.

Added a partition method to all containers #1916 by johnw42

Commits

7e33ca9 release 4.2.1 (#1923)

ac3a055 [Typescript] rollback some of the change on toJS to avoir circular referenc...

d88f722 update changelog for 4.2.0 (#1918)

3f2ec9f upgrade changelog

ffb3ee8 better type for Record.toJS (#1917)

cfd7957 Update CHANGELOG.md

9ff4612 Added a partition method to all containers (#1916)

908f205 fix Set.concat to concatenate strings as items (#1913)

7cf6f8e fix CI issue in latest npm version (#1908)

fb4701a Release 4.1.0 (#1905)

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dependencies javascript
opened by dependabot[bot] 0
chore(deps-dev): bump eslint from 8.29.0 to 8.31.0
Bumps eslint from 8.29.0 to 8.31.0.

Release notes

Sourced from eslint's releases.

v8.31.0

Features

52c7c73 feat: check assignment patterns in no-underscore-dangle (#16693) (Milos Djermanovic)

b401cde feat: add options to check destructuring in no-underscore-dangle (#16006) (Morten Kaltoft)

30d0daf feat: group properties with values in parentheses in key-spacing (#16677) (Francesco Trotta)

Bug Fixes

35439f1 fix: correct syntax error in prefer-arrow-callback autofix (#16722) (Francesco Trotta)

87b2470 fix: new instance of FlatESLint should load latest config file version (#16608) (Milos Djermanovic)

Documentation

4339dc4 docs: Update README (GitHub Actions Bot)

4e4049c docs: optimize code block structure (#16669) (Sam Chen)

54a7ade docs: do not escape code blocks of formatters examples (#16719) (Sam Chen)

e5ecfef docs: Add function call example for no-undefined (#16712) (Elliot Huffman)

a3262f0 docs: Add mastodon link (#16638) (Amaresh S M)

a14ccf9 docs: clarify files property (#16709) (Sam Chen)

3b29eb1 docs: fix npm link (#16710) (Abdullah Osama)

a638673 docs: fix search bar focus on Esc (#16700) (Shanmughapriyan S)

f62b722 docs: country flag missing in windows (#16698) (Shanmughapriyan S)

4d27ec6 docs: display zh-hans in the docs language switcher (#16686) (Percy Ma)

8bda20e docs: remove manually maintained anchors (#16685) (Percy Ma)

b68440f docs: User Guide Getting Started expansion (#16596) (Ben Perlmutter)

Chores

65d4e24 chore: Upgrade @eslint/eslintrc@1.4.1 (#16729) (Brandon Mills)

8d93081 chore: fix CI failure (#16721) (Sam Chen)

8f17247 chore: Set up automatic updating of README (#16717) (Nicholas C. Zakas)

4cd87cb ci: bump actions/stale from 6 to 7 (#16713) (dependabot[bot])

fd20c75 chore: sort package.json scripts in alphabetical order (#16705) (Darius Dzien)

10a5c78 chore: update ignore patterns in eslint.config.js (#16678) (Milos Djermanovic)

v8.30.0

Features

075ef2c feat: add suggestion for no-return-await (#16637) (Daniel Bartholomae)

7190d98 feat: update globals (#16654) (Sébastien Règne)

Bug Fixes

1a327aa fix: Ensure flat config unignores work consistently like eslintrc (#16579) (Nicholas C. Zakas)

9b8bb72 fix: autofix recursive functions in no-var (#16611) (Milos Djermanovic)

Documentation

6a8cd94 docs: Clarify Discord info in issue template config (#16663) (Nicholas C. Zakas)

ad44344 docs: CLI documentation standardization (#16563) (Ben Perlmutter)

293573e docs: fix broken line numbers (#16606) (Sam Chen)

fa2c64b docs: use relative links for internal links (#16631) (Percy Ma)

75276c9 docs: reorder options in no-unused-vars (#16625) (Milos Djermanovic)

7276fe5 docs: Fix anchor in URL (#16628) (Karl Horky)

6bef135 docs: don't apply layouts to html formatter example (#16591) (Tanuj Kanti)

dfc7ec1 docs: Formatters page updates (#16566) (Ben Perlmutter)

... (truncated)

Changelog

Sourced from eslint's changelog.

v8.31.0 - December 31, 2022

65d4e24 chore: Upgrade @eslint/eslintrc@1.4.1 (#16729) (Brandon Mills)

35439f1 fix: correct syntax error in prefer-arrow-callback autofix (#16722) (Francesco Trotta)

87b2470 fix: new instance of FlatESLint should load latest config file version (#16608) (Milos Djermanovic)

8d93081 chore: fix CI failure (#16721) (Sam Chen)

4339dc4 docs: Update README (GitHub Actions Bot)

8f17247 chore: Set up automatic updating of README (#16717) (Nicholas C. Zakas)

4e4049c docs: optimize code block structure (#16669) (Sam Chen)

54a7ade docs: do not escape code blocks of formatters examples (#16719) (Sam Chen)

52c7c73 feat: check assignment patterns in no-underscore-dangle (#16693) (Milos Djermanovic)

e5ecfef docs: Add function call example for no-undefined (#16712) (Elliot Huffman)

a3262f0 docs: Add mastodon link (#16638) (Amaresh S M)

4cd87cb ci: bump actions/stale from 6 to 7 (#16713) (dependabot[bot])

a14ccf9 docs: clarify files property (#16709) (Sam Chen)

3b29eb1 docs: fix npm link (#16710) (Abdullah Osama)

fd20c75 chore: sort package.json scripts in alphabetical order (#16705) (Darius Dzien)

a638673 docs: fix search bar focus on Esc (#16700) (Shanmughapriyan S)

f62b722 docs: country flag missing in windows (#16698) (Shanmughapriyan S)

4d27ec6 docs: display zh-hans in the docs language switcher (#16686) (Percy Ma)

8bda20e docs: remove manually maintained anchors (#16685) (Percy Ma)

b401cde feat: add options to check destructuring in no-underscore-dangle (#16006) (Morten Kaltoft)

b68440f docs: User Guide Getting Started expansion (#16596) (Ben Perlmutter)

30d0daf feat: group properties with values in parentheses in key-spacing (#16677) (Francesco Trotta)

10a5c78 chore: update ignore patterns in eslint.config.js (#16678) (Milos Djermanovic)

v8.30.0 - December 16, 2022

f2c4737 chore: upgrade @eslint/eslintrc@1.4.0 (#16675) (Milos Djermanovic)

1a327aa fix: Ensure flat config unignores work consistently like eslintrc (#16579) (Nicholas C. Zakas)

075ef2c feat: add suggestion for no-return-await (#16637) (Daniel Bartholomae)

ba74253 chore: standardize npm script names per #14827 (#16315) (Patrick McElhaney)

6a8cd94 docs: Clarify Discord info in issue template config (#16663) (Nicholas C. Zakas)

0d9af4c ci: fix npm v9 problem with file: (#16664) (Milos Djermanovic)

7190d98 feat: update globals (#16654) (Sébastien Règne)

ad44344 docs: CLI documentation standardization (#16563) (Ben Perlmutter)

90c9219 refactor: migrate off deprecated function-style rules in all tests (#16618) (Bryan Mishkin)

9b8bb72 fix: autofix recursive functions in no-var (#16611) (Milos Djermanovic)

293573e docs: fix broken line numbers (#16606) (Sam Chen)

fa2c64b docs: use relative links for internal links (#16631) (Percy Ma)

75276c9 docs: reorder options in no-unused-vars (#16625) (Milos Djermanovic)

7276fe5 docs: Fix anchor in URL (#16628) (Karl Horky)

6bef135 docs: don't apply layouts to html formatter example (#16591) (Tanuj Kanti)

dfc7ec1 docs: Formatters page updates (#16566) (Ben Perlmutter)

8ba124c docs: update the prefer-const example (#16607) (Pavel)

e6cb05a docs: fix css leaking (#16603) (Sam Chen)

Commits

d9a39c7 8.31.0

5d182ce Build: changelog update for 8.31.0

65d4e24 chore: Upgrade @eslint/eslintrc@1.4.1 (#16729)

35439f1 fix: correct syntax error in prefer-arrow-callback autofix (#16722)

87b2470 fix: new instance of FlatESLint should load latest config file version (#16608)

8d93081 chore: fix CI failure (#16721)

4339dc4 docs: Update README

8f17247 chore: Set up automatic updating of README (#16717)

4e4049c docs: optimize code block structure (#16669)

54a7ade docs: do not escape code blocks of formatters examples (#16719)

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dependencies javascript
opened by dependabot[bot] 0
chore(deps-dev): bump typedoc from 0.23.20 to 0.23.23
Bumps typedoc from 0.23.20 to 0.23.23.

Release notes

Sourced from typedoc's releases.

v0.23.23

Features

Added ts.Signature to emitted EVENT_CREATE_SIGNATURE event, #2002.

Bug Fixes

Links to members hidden by filter settings now temporarily override the filter, #2092.

If src/ and src/x are specified as entry points, src/ will no longer be ignored, #2121.

v0.23.22

Features

Add support for defining the kind sort order, #2109.

Bug Fixes

Normalize all file paths on Windows, #2113.

Fix @link tags within lists, #2103.

v0.23.21

Features

Added support for a catch-all wildcard in externalSymbolLinkMappings, #2102.

Added support for TypeScript 4.9.

Thanks!

@mistic100

Changelog

Sourced from typedoc's changelog.

v0.23.23 (2022-12-18)

Features

Added ts.Signature to emitted EVENT_CREATE_SIGNATURE event, #2002.

Bug Fixes

Links to members hidden by filter settings now temporarily override the filter, #2092.

If src/ and src/x are specified as entry points, src/ will no longer be ignored, #2121.

v0.23.22 (2022-12-11)

Features

Add support for defining the kind sort order, #2109.

Bug Fixes

Normalize all file paths on Windows, #2113.

Fix @link tags within lists, #2103.

v0.23.21 (2022-11-14)

Features

Added support for a catch-all wildcard in externalSymbolLinkMappings, #2102.

Added support for TypeScript 4.9.

Thanks!

@mistic100

Commits

56813c0 Update changelog for release

8066d2f Bump version to 0.23.23

6349b2c Missed a couple

e7921a8 Update dependencies

cd9b249 Ensure linked-to members are always visible

c40ed98 Add signature to emitted create signature event

c86c52e Fix #2121

ff5cb55 Update changelog for release

678bf5e Bump version to 0.23.22

84c26e6 Fix @link tags within lists

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dependencies javascript
opened by dependabot[bot] 0
chore(deps-dev): bump @types/lodash from 4.14.186 to 4.14.191
Bumps @types/lodash from 4.14.186 to 4.14.191.

Commits

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dependencies javascript
opened by dependabot[bot] 0
HTTP request waterfall when querying multiple Parquet files in S3

More of a question than an actual bug report. I experimented with DuckDB WASM over the weekend, where I have some partitioned Parquet files in a S3 bucket. Now, I want to query those files with DuckDB WASM. I wondered why my query took so long, then I had a look on the network tab in Chrome:

I honestly wonder if/why the requests couldn't be parallelized, instead of the seemingly sequential access pattern. This would really increase the query speed for my use case (multiple smaller files).

Thanks for any feedback!

opened by tobilg 0

Owner

DuckDB

GitHub https://shell.duckdb.org

This is version 1.85 of the Berkeley DB code.

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WebAssembly version of DuckDB

Related tags

Overview

Comments

What happens?

To Reproduce

Environment (please complete the following information):

v5.48.0

5.48.0 (2023-01-02)

Bug Fixes

Features

v5.47.1

5.47.1 (2022-12-26)

Bug Fixes

v5.47.0

5.47.0 (2022-12-19)

Features

v5.46.1

5.46.1 (2022-12-12)

v5.46.0

5.46.0 (2022-12-08)

Bug Fixes

Features

v5.45.1

5.45.1 (2022-12-05)

5.48.0 (2023-01-02)

5.47.1 (2022-12-26)

5.47.0 (2022-12-19)

5.46.1 (2022-12-12)

5.46.0 (2022-12-08)

5.45.1 (2022-12-05)

Bug Fixes

v4.2.1

What's Changed

v4.2.0

[4.2.1] - 2022-12-23

[4.2.0] - 2022-12-22

v8.31.0

Features

Bug Fixes

Documentation

Chores

v8.30.0

Features

Bug Fixes

Documentation

v0.23.23

Features

Bug Fixes

v0.23.22

Features

Bug Fixes

v0.23.21

Features

Thanks!

v0.23.23 (2022-12-18)

Features

Bug Fixes

v0.23.22 (2022-12-11)

Features

Bug Fixes

v0.23.21 (2022-11-14)

Features

Thanks!

Owner

DuckDB

This is version 1.85 of the Berkeley DB code.

DuckDB is an in-process SQL OLAP Database Management System

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WasmEdge Runtime is a high-performance, extensible, and hardware optimized WebAssembly Virtual Machine for automotive, cloud, AI, and blockchain applications.

Deploy SCRFD, an efficient high accuracy face detection approach, in your web browser with ncnn and webassembly

A (relatively) small node library to clone and pull git repositories in a standalone manner thanks to libgit2, powered by WebAssembly and Emscripten

Deploy OcrLite in your web browser with ncnn and webassembly

Python bindings for Wasm3, the fastest WebAssembly interpreter

Chocolate Doom WebAssembly port with WebSockets support

A WebAssembly interpreter written in C for demonstration.

A tiny programming language that transpiles to C, C++, Java, TypeScript, Python, C#, Swift, Lua and WebAssembly 🚀