astra
v1.0.1
Published
ASTRA is easy to use AST traverse library
Downloads
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ASTRA
ASTRA is easy to use AST traverse library
Installation
npm install --save astra
Usage
var astra=require('astra');
var newAst=astra(ast)
.when(pattern,function(chunk){
})
.when(anotherPattern,function(chunk){
})
.run();
Examples
simple
var newAst = astra(ast)
.when({
"type": "Literal",
"value": "myDirective",
"raw": "\"myDirective\""
}, function (chunk) {
chunk.value = "newMyDirective";
chunk.raw = "\"newMyDirective\""
})
.run();
},
{
"type": "Literal",
"value": "/app/styles/styles.css"
}
], function (chunk) {
chunk.value = "";
chunk.raw = "\"\"";
})
.run();
<br>
complex pattern(** means deep child)
```javascript
var newAst=astra(ast)
.when({
"type": "FunctionExpression",
"params": [
{
"type": "Identifier",
"name": "$routeProvider"
}
],
"**": {
"type": "CallExpression",
"callee": {
"type": "MemberExpression",
"property": {
"type": "Identifier",
"name": "when"
}
},
"**": [
{
"type": "Property",
"key": {
"type": "Identifier",
"name": "template"
},
"value": {
"type": "Literal"
}
},
{
"type": "Property",
"key": {
"type": "Identifier",
"name": "styles"
},
"value": {
"type": "Literal"
}
}
]
}
}, function (chunk) {
chunk.value.value='';
})
.run();
License
MIT