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‎.eslintrc.js

+4-4
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@@ -4,15 +4,15 @@ module.exports = {
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node: true,
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es2021: true,
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jest: true,
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worker: true
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worker: true,
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},
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extends: 'eslint:recommended',
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parserOptions: {
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ecmaVersion: 12,
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sourceType: 'module'
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sourceType: 'module',
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},
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rules: {
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'no-unused-vars': 'off',
16-
'no-inner-declarations': 'off'
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}
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'no-inner-declarations': 'off',
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},
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};

‎.github/workflows/node.js.yml

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@@ -7,19 +7,18 @@ on: [push, pull_request]
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- name: Use Node.js ${{ matrix.node-version }}
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uses: actions/setup-node@v2
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with:
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node-version: 15.x
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- uses: actions/cache@v2
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with:
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path: '**/node_modules'
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key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
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- run: yarn
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- run: yarn prettier-check
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- run: yarn lint-check --max-warnings 0
13+
- uses: actions/checkout@v2
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- name: Use Node.js ${{ matrix.node-version }}
15+
uses: actions/setup-node@v2
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with:
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node-version: 15.x
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- uses: actions/cache@v2
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with:
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path: '**/node_modules'
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key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
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- run: yarn
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- run: yarn prettier-check
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- run: yarn lint-check --max-warnings 0

‎README.md

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@@ -1,4 +1,3 @@
1-
21
This is an absurd project.
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43
It implements a backend for [sql.js](https://github.com/sql-js/sql.js/) (sqlite3 compiled for the web) that treats IndexedDB like a disk and stores data in blocks there. That means your sqlite3 database is persisted. And not in the terrible way of reading and writing the whole image at once -- it reads and writes your db in small chunks.
@@ -47,7 +46,7 @@ import { SQLiteFS } from 'absurd-sql';
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import IndexedDBBackend from 'absurd-sql/dist/indexeddb-backend';
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async function run() {
50-
let SQL = await initSqlJs({ locateFile: file => file });
49+
let SQL = await initSqlJs({ locateFile: (file) => file });
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let sqlFS = new SQLiteFS(SQL.FS, new IndexedDBBackend());
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SQL.register_for_idb(sqlFS);
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@@ -67,16 +66,16 @@ async function run() {
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PRAGMA journal_mode=MEMORY;
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`);
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70-
// Your code
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// Your code
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}
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```
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## Requirements
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Because this uses `SharedArrayBuffer` and the `Atomics` API, there are some requirement for code to run.
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78-
* It must be run in a worker thread (you shouldn't block the main thread with queries anyway)
79-
* Your server must respond with the following headers:
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- It must be run in a worker thread (you shouldn't block the main thread with queries anyway)
78+
- Your server must respond with the following headers:
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```
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Cross-Origin-Opener-Policy: same-origin
@@ -113,7 +112,7 @@ Read [this blog post](https://jlongster.com/future-sql-web) for more details.
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There are several things that could be done:
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116-
* Add a bunch more tests
117-
* Implement a `webkitFileSystem` backend
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* I already started it [here](https://gist.github.com/jlongster/ec00ddbb47b4b29897ab5939b8e32fbe), but initial results showed that it was way slower?
119-
* Bug fixes
115+
- Add a bunch more tests
116+
- Implement a `webkitFileSystem` backend
117+
- I already started it [here](https://gist.github.com/jlongster/ec00ddbb47b4b29897ab5939b8e32fbe), but initial results showed that it was way slower?
118+
- Bug fixes

‎jest.config.js

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@@ -1,9 +1,9 @@
11
module.exports = {
22
transformIgnorePatterns: [
33
// Change MODULE_NAME_HERE to your module that isn't being compiled
4-
'/node_modules/(?!perf-deets).+\\.js$'
4+
'/node_modules/(?!perf-deets).+\\.js$',
55
],
66
moduleNameMapper: {
7-
'perf-deets': 'perf-deets/noop'
8-
}
7+
'perf-deets': 'perf-deets/noop',
8+
},
99
};

‎rollup.config.js

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@@ -15,7 +15,7 @@ function getConfig(entry, filename, perf) {
1515
entryFileNames: filename,
1616
chunkFileNames: `${basename}-[name]-[hash].js`,
1717
format: 'esm',
18-
exports: 'named'
18+
exports: 'named',
1919
},
2020
plugins: [
2121
!perf &&
@@ -24,18 +24,18 @@ function getConfig(entry, filename, perf) {
2424
'perf-deets': path.resolve(
2525
__dirname,
2626
'./node_modules/perf-deets/noop.js'
27-
)
28-
}
27+
),
28+
},
2929
}),
3030
webWorkerLoader({
3131
pattern: /.*\/worker\.js/,
3232
targetPlatform: 'browser',
3333
external: [],
34-
plugins: [terser()]
34+
plugins: [terser()],
3535
}),
36-
nodeResolve()
36+
nodeResolve(),
3737
],
38-
...(perf ? { external: ['perf-deets'] } : {})
38+
...(perf ? { external: ['perf-deets'] } : {}),
3939
};
4040
}
4141

@@ -45,5 +45,5 @@ export default [
4545
getConfig('src/indexeddb/backend.js', 'indexeddb-backend.js'),
4646
getConfig('src/indexeddb/main-thread.js', 'indexeddb-main-thread.js'),
4747
getConfig('src/indexeddb/backend.js', 'indexeddb-backend.js', true),
48-
getConfig('src/indexeddb/main-thread.js', 'indexeddb-main-thread.js', true)
48+
getConfig('src/indexeddb/main-thread.js', 'indexeddb-main-thread.js', true),
4949
];

‎src/examples/bench/index.html

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@@ -1,7 +1,9 @@
11
<!DOCTYPE html>
22
<body>
33
<style type="text/css">
4-
html, body, .container {
4+
html,
5+
body,
6+
.container {
57
height: 100%;
68
}
79

@@ -43,7 +45,7 @@
4345
display: block;
4446
margin-bottom: 5px;
4547
}
46-
48+
4749
.output > div {
4850
margin-bottom: 10px;
4951
}
@@ -81,19 +83,20 @@
8183

8284
<div class="container">
8385
<div class="text">
84-
This is sqlite3 running in your browser with a backend that
85-
properly persists the database in IndexedDB
86-
(<a href="https://github.com/jlongster/absurd-sql">absurd-sql</a>).
87-
It stores each page from the db as a separate item, treating IDB
88-
like a hard disk. It never has to load the full DB into memory
89-
and can update it with small individual writes.
86+
This is sqlite3 running in your browser with a backend that properly
87+
persists the database in IndexedDB (<a
88+
href="https://github.com/jlongster/absurd-sql"
89+
>absurd-sql</a
90+
>). It stores each page from the db as a separate item, treating IDB like
91+
a hard disk. It never has to load the full DB into memory and can update
92+
it with small individual writes.
9093
</div>
9194

9295
<div class="text last">
93-
The below examples are meant to be stress tests, showing that it
94-
can handle large amounts of data and queries that need to scan
95-
all of it. With more normal cases and a small cache, it works
96-
really well. It easily beats IndexedDB up to a factor of 10.
96+
The below examples are meant to be stress tests, showing that it can
97+
handle large amounts of data and queries that need to scan all of it. With
98+
more normal cases and a small cache, it works really well. It easily beats
99+
IndexedDB up to a factor of 10.
97100
</div>
98101

99102
<div>
@@ -110,31 +113,55 @@
110113
</div>
111114

112115
<div class="options">
113-
<label><input type="checkbox" name="profile"> Record performance profile</label>
114-
<label><input type="checkbox" name="raw-indexeddb"> Use raw IndexedDB</label>
116+
<label
117+
><input type="checkbox" name="profile" /> Record performance
118+
profile</label
119+
>
120+
<label
121+
><input type="checkbox" name="raw-indexeddb" /> Use raw IndexedDB</label
122+
>
115123
</div>
116124

117125
<div class="disable-if-raw-idb">
118126
<div class="options">
119127
Backend:
120-
<label><input type="radio" name="backend" value="idb" checked> IndexedDB</label>
121-
<label><input type="radio" name="backend" value="memory"> Memory</label>
128+
<label
129+
><input type="radio" name="backend" value="idb" checked />
130+
IndexedDB</label
131+
>
132+
<label
133+
><input type="radio" name="backend" value="memory" /> Memory</label
134+
>
122135
</div>
123136

124137
<div class="options">
125138
Cache size:
126-
<label><input type="radio" name="cacheSize" value="0" checked> 0MB</label>
127-
<label><input type="radio" name="cacheSize" value="2000"> 2MB</label>
128-
<label><input type="radio" name="cacheSize" value="10000"> 10MB</label>
129-
<label><input type="radio" name="cacheSize" value="60000"> 60MB</label>
130-
<span class="warning" style="font-size: 13px; color: #8080a0">Using a cache will greatly improve perf, but no cache shows the full number of read/writes</span>
139+
<label
140+
><input type="radio" name="cacheSize" value="0" checked /> 0MB</label
141+
>
142+
<label><input type="radio" name="cacheSize" value="2000" /> 2MB</label>
143+
<label
144+
><input type="radio" name="cacheSize" value="10000" /> 10MB</label
145+
>
146+
<label
147+
><input type="radio" name="cacheSize" value="60000" /> 60MB</label
148+
>
149+
<span class="warning" style="font-size: 13px; color: #8080a0"
150+
>Using a cache will greatly improve perf, but no cache shows the full
151+
number of read/writes</span
152+
>
131153
</div>
132154

133155
<div class="options pageSize">
134156
Page size:
135-
<label><input type="radio" name="pageSize" value="4096" checked> 4096</label>
136-
<label><input type="radio" name="pageSize" value="8192"> 8192</label>
137-
<label><input type="radio" name="pageSize" value="16384"> 16384</label>
157+
<label
158+
><input type="radio" name="pageSize" value="4096" checked />
159+
4096</label
160+
>
161+
<label><input type="radio" name="pageSize" value="8192" /> 8192</label>
162+
<label
163+
><input type="radio" name="pageSize" value="16384" /> 16384</label
164+
>
138165
</div>
139166
</div>
140167

‎src/examples/bench/main.js

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@@ -34,7 +34,7 @@ function init() {
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3535
worker.postMessage({ type: 'ui-invoke', name: 'init' });
3636

37-
worker.addEventListener('message', e => {
37+
worker.addEventListener('message', (e) => {
3838
switch (e.data.type) {
3939
case 'output': {
4040
output(e.data.msg);
@@ -59,7 +59,7 @@ function init() {
5959
});
6060

6161
for (let input of document.querySelectorAll('input[type=radio]')) {
62-
input.addEventListener('change', e => {
62+
input.addEventListener('change', (e) => {
6363
let name = e.target.name;
6464
let value = e.target.value;
6565
worker.postMessage({ type: 'options', name, value });
@@ -73,27 +73,27 @@ function init() {
7373
document.querySelector('input[name="pageSize"][value="4096"]').checked = true;
7474

7575
let profile = document.querySelector('input[name="profile"]');
76-
profile.addEventListener('click', e => {
76+
profile.addEventListener('click', (e) => {
7777
worker.postMessage({ type: 'profiling', on: e.target.checked });
7878
});
7979
worker.postMessage({ type: 'profiling', on: profile.checked });
8080

8181
let rawIDB = document.querySelector('input[name="raw-indexeddb"]');
82-
rawIDB.addEventListener('click', e => {
82+
rawIDB.addEventListener('click', (e) => {
8383
document.querySelector('.disable-if-raw-idb').style.opacity = e.target
8484
.checked
8585
? 0.3
8686
: 1;
8787
worker.postMessage({
8888
type: 'options',
8989
name: 'raw-idb',
90-
on: e.target.checked
90+
on: e.target.checked,
9191
});
9292
});
9393
worker.postMessage({
9494
type: 'options',
9595
name: 'raw-idb',
96-
on: rawIDB.checked
96+
on: rawIDB.checked,
9797
});
9898
}
9999

@@ -105,7 +105,7 @@ let methods = [
105105
'randomReads',
106106
'deleteFile',
107107
'readBench',
108-
'writeBench'
108+
'writeBench',
109109
];
110110

111111
for (let method of methods) {
@@ -119,11 +119,11 @@ for (let method of methods) {
119119

120120
init();
121121

122-
window.runQuery = sql => {
122+
window.runQuery = (sql) => {
123123
let reqId = Math.random();
124124

125-
let promise = new Promise(resolve => {
126-
let handler = e => {
125+
let promise = new Promise((resolve) => {
126+
let handler = (e) => {
127127
if (e.data.type === 'query-results' && e.data.id === reqId) {
128128
worker.removeEventListener('message', handler);
129129
resolve(e.data.data);

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