TS-Merger

Generic TypeScript Merger


Usage

``javascript
let tsm = require('@devonfw/ts-merger');
let mergedCode: string = tsm.merge(baseContents, pathContents, patchOverrides);
`

Being:
- baseContents: contents of the base in a string
- patchContents: contents of the patch in a string
- patchOverrides(true/false): Being false, base will have priority in case of conflicts. With true, patch will have priority.

$3


`javascript
let tsm = require('@devonfw/ts-merger');
let mergedCode: string = tsm.merge(baseContents, pathContents, patchOverrides);
`

Features

The merger allows merging of this node kinds:

- ImportDeclaration
- ExportDeclaration
- ClassDeclaration
- InterfaceDeclaration
- Decorator
- FunctionDeclaration
- MethodDeclaration
- Parameter
- BodyMethod
- PropertyAssignment
- PropertyDeclaration
- Constructor
- ArrayLiteralExpression
- ObjectLiteralExpression
- CallExpression
- VariableAssignment

This version allows merging of TypeScript files that follow this structure:

- Array of imports
- Array of functions
- Array of variables
- Array of classes

##Examples

Base file
`javascript
import a from 'b';
import f from 'g';

class Example1 {
private propertyFromBase: string;

oneMethod() {
let variable = 'base';
}
}
`

Patch file

`javascript
import c from 'd';
import h from 'g';

class Example1 {
private propertyFromPatch: number;

oneMethod() {
let variable = 'patch';
}

anotherMethod(){}
}

class AnotherClass {}
`
Resultant merged code (patchOverrides=false)

`javascript
import a from 'b';
import c from 'd';
import { f, h } from 'g';

class Example1 {
private propertyFromBase: string;
private propertyFromPatch: number;

oneMethod() {
let variable = 'base';
}

anotherMethod(){}
}

class AnotherClass {}
`

Resulting merged code (patchOverrides=true)

`javascript
import a from 'b';
import c from 'd';
import { f, h } from 'g';

class Example1 {
private propertyFromBase: string;
private propertyFromPatch: number;

oneMethod() {
let variable = 'patch';
}

anotherMethod(){}
}

class AnotherClass {}
``

Future version

Next releases will include merge support for:

- Comments support