@mojule/transform
v0.2.9
Published
Declarative object transformation
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transform
Declarative object transformation
Useful for when you want to write simple models, but something in your code requires more complex models. Particularly good for turning a minimal amount of data into something that has more boiler plate. One use case we have is turning simple data models into view models. Great when you have to write lots of models by hand and don't want to write them out in full when a tool can do that for you.
Usage
npm install @mojule/transform
const transform = require( '@mojule/transform' )
const declaration = require( './path/to/declaration.json' )
const transformed = transform( model, declaration )
Examples
Append a property
Input:
const model = {
"a": "Hello"
}
const transform = {
"b": "World"
}
Output:
{
"a": "Hello",
"b": "World"
}
Copy a property
Input:
const model = {
"a": "Hello"
}
const transform = {
"b": {
"$value": "a"
}
}
Output:
{
"a": "Hello",
"b": "Hello"
}
Delete a property
Input:
const model = {
"a": "Hello"
}
const transform = {
"a": "$delete"
}
Output:
{}
Rename a property
Input:
const model = {
"a": "Hello"
}
const transform = {
"a": "$delete",
"b": {
"$value": "a"
}
}
Output:
{
"b": "Hello"
}
Conditional
Input:
const model = {
"a": "Hello"
}
const transform = {
"b": {
"$if": [
{ "$value": "a" },
true
]
},
"c": {
"$if": [
{ "$value": "d" },
true
]
}
}
Output:
{
"a": "Hello",
"b": true
}