		travetto: Compiler
		===

		Basis for a more thorough compilation process, including source maps. The compiler also provides the ability for handling
		a piple of AST transformations. The framework uses AST transformations to support it's own needs, with the reality that
		external modules, or even project code might want to provide it's own transformations. In addition to the loading of transformations
		the Compiler module also provides a set of utilities to enhance the transformation process.
		The framework, while using [`typescript`](http://typescriptlang.org), has need of some extended functionality. The additional functionality is
		* Supports on-the-fly compilation, nothing needs to be compiled ahead of time
		* Enhanced AST transformations, and transformer registration
		* All AST transformations are single-file based, and runs without access to the `TypeChecker`
		* Intelligent caching of source files to minimize recompilation
		* Support for watching sources files:
		* Detecting changes to files
		* Detecting changes to specific classes
		* Detecting changes to specific methods within classes
		* Allows for hot-reloading of classes during development
		* Utilizes `es2015` ```Proxy```s to allow for swapping out implementation at runtime

		Transformations are defined by `transformation.*.ts` as the filename. The schema for a transformation is
		Additionally, there is support for common AST transformation patterns to facilitate all the transformers used throughout the framework. Functionality includes:
		* ```getDecoratorIdent(d: ts.Decorator): ts.Identifier```
		Gets the name of the decorator function
		* ```findAnyDecorator(node: ts.Node, patterns: { [key: string]: Set<string> }, state: State): ts.Decorator \| undefined ```
		Attempts to find any matching decorators as defined in patterns
		* ```addImport(file: ts.SourceFile, imports: Import[])```
		Will add an import to the existing source file
		* ```fromLiteral(val: any)```
		Converts a literal value to the corresponding AST nodes
		* ```extendObjectLiteral(addTo: object, lit?: ts.ObjectLiteralExpression)```
		Extends an AST Node via a literal value, generally used to emulate ```Object.assign``` in the AST
		* ```getPrimaryArgument<T = ts.Node>(node: ts.CallExpression \| ts.Decorator \| undefined): T \| undefined```
		Retrieves the first argument of CallExpression or Decorator
		* ```getObjectValue(node: ts.ObjectLiteralExpression \| undefined, key: string)```
		Extracts the literal value from an AST node if possible
		* ```importingVisitor```
		Provides a transformer visitor that collects imports, and adds them to the source file as needed
		* ```importIfExternal<T extends State>(typeNode: ts.TypeNode, state: State)```
		Will import a reference if the type is not defined within the file
		* ```buildImportAliasMap(pathToType)```
		Will generate an import lookup to be used for simple type resolution

		Transformations are defined by `support/transformation.<name>.ts` as the filename. The schema for a transformer is

		```typescript
		@@ -16,6 +45,8 @@ export class CustomerTransformer {
		transformer: (context: ts.TransformationContext) => {
		return (file: ts.SourceFile) => file
		return (file: ts.SourceFile) => {
		... modify source file ...
		return file;
		}
		}
		}
		```

		```

@travetto/compiler - npm Package Compare versions

New alerts

Fixed alerts

Improved metrics