a hack that makes jq run in the browser with emscripten.
npm install @frielforreal/jq-web 
This is a WebAssembly build of jq, the command-line JSON processor.
It runs in the browser.
```
npm install jq-web
`js
var jq = require('jq-web');
jq.then( jq => jq.json({
a: {
big: {
json: [
'full',
'of',
'important',
'things'
]
}
}
}, '.a.big.json | ["empty", .[1], "useless", .[3]] | join(" ")')
`
The code above returns the string "empty of useless things".
You could do the same using the promised API with jq.promised.json({...}).then(result => {}). That is useful if you're loading a .mem or .wasm file, as the library won't return the correct results until these files are asynchronously fetched by the Emscripten runtime.
#### fsrequire
The Emscripten runtime will try to the fs module, and if it fails it will resort to an in-memory filesystem (almost no use of that is made of the library, but it is needed somehow). In Browserify there's a default {} that corresponds to the fs module, but in Webpack you must declare it as an empty module.
#### 404 error when loading .wasm files.wasm
By default projects compiled with Emscripten look for files in the same directory that the .js file is run from. This causes issues when using webpack because name of the .wasm file is altered with a hash and can be placed in a different directory. To fix this problem you can use the copy-webpack-plugin to copy the jq.wasm file to the same directory that the webpack bundle is placed.
jq-web exports a promise that resolves to an object with json and raw methods.
jq.json(
jq.raw( will take a string that will be passed as it is to jq (like if you were doing echo ' on the command line) then return a string with the raw STDOUT response.
1. Install Emscripten. There have been several API changes over time; version 3.1.31
is known to work.
2. Clone this repository, and cd into it.make
3.
* This may take a while if you have never run Emscripten before.
. These are a good place to start when verifying a build.
To run them, do make test.You can test browser functionality by running:
./node_modules/live-server/live-server.js --open="index.html"`.