underhill

An opinionated wrapper of tsquery and some other things. Very early in prototyping so everything is likely to change! :surfer:

https://astexplorer.net/ is a very useful tool for building selectors.

Examples

``typescript
import * as path from 'path'
import { SourceCode } from 'underhill'

let example = SourceCode.fromFile(path.join(__dirname, 'example.ts'))

example.modifyParent({
selector: 'InterfaceDeclaration > Identifier[name!=/[I][A-Z].*/]',
action: o =>
o.members.push(
SourceCode.extractFirst(
'PropertySignature',

interface __ {
readonly testProperty: boolean
}

)
),
})

example.modifyParent({
selector: 'Identifier[name=defaultState]',
action: o =>
o.initializer.properties.push(
SourceCode.extractFirst(
'PropertyAssignment',

const __ = {
testProperty: false
}

)
),
})

example.logDiff()

example.writeToFile(path.join(__dirname, 'output.ts'))
`

`typescript
let files = await SourceCode.searchFiles(path.join(__dirname, 'my-project'), {
selector: 'CallExpression[expression.text=getDefault]',
})

files.forEach(f => {
console.log('\n' + f.path)
console.log(f.summary.join('\n---\n'))
})
``