feat: allow convert with tsconfig value directly

Author: songkeys

README.md

@@ -13,6 +13,8 @@ npm i tsconfig-to-swcconfig
 
 ## Usage
 
+## Convert config in a tsconfig file
+
 ```typescript
 import { convert } from 'tsconfig-to-swcconfig'
 
@@ -30,6 +32,32 @@ convert('tsconfig-filename.json', process.cwd(), {
 })
 ```
 
+## Convert tsconfig value
+
+Convert tsconfig value directly:
+
+```typescript
+import { convert } from 'tsconfig-to-swcconfig'
+
+const swcConfig = convertTsConfig({
+  module: 'commonjs',
+  target: 'es2018',
+  strict: true,
+  esModuleInterop: true,
+})
+```
+
+Advanced usage:
+
+```typescript
+import { convert } from 'tsconfig-to-swcconfig'
+
+const swcConfig = convertTsConfig(
+  { target: 'es2018' }, // tsconfig
+  { minify: true }, // more swc config to override...
+)
+```
+
 ## License
 
 MIT

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tsconfig-to-swcconfig",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Convert tsconfig to swc config",
   "main": "dist/index.js",
   "scripts": {

src/index.ts

@@ -1,4 +1,5 @@
 import type * as swcType from '@swc/core'
+import type * as tsType from 'typescript'
 import deepmerge from 'deepmerge'
 import { getTSOptions } from './utils'
 
@@ -8,8 +9,16 @@ export function convert(
   /** cwd */
   cwd: string = process.cwd(),
   /** swc configs to override */
+  swcOptions?: swcType.Options,
+): swcType.Options {
+  const tsOptions = getTSOptions(filename, cwd) ?? {}
+  return convertTsConfig(tsOptions, swcOptions)
+}
+
+export function convertTsConfig(
+  tsOptions: tsType.CompilerOptions,
   swcOptions: swcType.Options = {},
-) {
+): swcType.Options {
   // https://json.schemastore.org/tsconfig
   const {
     esModuleInterop = false,
@@ -25,7 +34,7 @@ export function convert(
     alwaysStrict = false,
     noImplicitUseStrict = false,
     paths,
-  } = getTSOptions(filename, cwd) ?? {}
+  } = tsOptions
   const module = (_module as unknown as string)?.toLowerCase()
 
   const transformedOptions = deepmerge(

test/index.ts

@@ -4,32 +4,32 @@ import { convert } from '../src/index'
 
 test('convert tsconfig file', (t) => {
   let result = convert()
-  t.match(result.jsc.target, 'es2018')
+  t.match(result.jsc?.target, 'es2018')
 
   result = convert(
     'tsconfig-not-default.json',
     path.resolve(__dirname, 'fixtures', 'tsconfig'),
     { minify: true },
   )
   t.match(result.sourceMaps, false)
-  t.match(result.module.type, 'commonjs')
-  t.match(result.module.noInterop, false)
+  t.match(result.module?.type, 'commonjs')
+  t.match(result.module?.noInterop, false)
   // @ts-ignore
-  t.match(result.module.strictMode, true)
-  t.match(result.jsc.externalHelpers, true)
-  t.match(result.jsc.target, 'es3')
-  t.match(result.jsc.parser?.decorators, true)
-  t.match(result.jsc.transform?.decoratorMetadata, true)
-  t.match(result.jsc.transform?.react?.pragma, 'React.createElement')
-  t.match(result.jsc.transform?.react?.pragmaFrag, 'React.Fragment')
-  t.match(result.jsc.keepClassNames, false)
+  t.match(result.module?.strictMode, true)
+  t.match(result.jsc?.externalHelpers, true)
+  t.match(result.jsc?.target, 'es3')
+  t.match(result.jsc?.parser?.decorators, true)
+  t.match(result.jsc?.transform?.decoratorMetadata, true)
+  t.match(result.jsc?.transform?.react?.pragma, 'React.createElement')
+  t.match(result.jsc?.transform?.react?.pragmaFrag, 'React.Fragment')
+  t.match(result.jsc?.keepClassNames, false)
   t.match(result.minify, true)
 
   result = convert(
     'tsconfig-edge-case.json',
     path.resolve(__dirname, 'fixtures', 'tsconfig'),
   )
-  t.match(result.module.noInterop, true)
+  t.match(result.module?.noInterop, true)
 
   t.end()
 })