How to make webpack obfuscator config type safe?

I want to ensure the values I use in my webpack obfuscator config are type safe. But for some reason the TypeScript compiler gives me no error if, for example, I use incorrect values like `high-obfuscation123` for `optionsPreset`:

webpack.config.ts

```typescript
export const mainConfig: Configuration = {
// ...
plugins: [
// ...
new WebpackObfuscatorPlugin({
optionsPreset: "high-obfuscation123", // No compile time errors. Only runtime ones (during webpack running).
// ...
})
],
// ...
}
```

I also tried to access configuration types directly but it causes an another runtime error although VSCode successfully recognize imports:

webpack.config.ts

```typescript
// ...
import WebpackObfuscatorPlugin from 'webpack-obfuscator';
import { OptionsPreset } from 'javascript-obfuscator/typings/src/enums/options/presets/OptionsPreset';
import { SourceMapMode } from 'javascript-obfuscator/typings/src/enums/source-map/SourceMapMode';
import { SourceMapSourcesMode } from 'javascript-obfuscator/typings/src/enums/source-map/SourceMapSourcesMode';

export const mainConfig: Configuration = {
// ...
plugins: [
// ...
new WebpackObfuscatorPlugin({
// ...
optionsPreset: OptionsPreset.LowObfuscation,
sourceMapMode: SourceMapMode.Separate,
sourceMapSourcesMode: SourceMapSourcesMode.Sources,
stringArrayIndexesType: [StringArrayIndexesType.HexadecimalNumericString],
target: ObfuscationTarget.Node
})
],
// ...
}
```

How can I make my webpack obfuscator config type safe?

从 webpack.config.ts 和所引用的 javascript-obfuscator typings 路径开始；检查 WebpackObfuscatorPlugin 如何声明其选项，以及这些 enum import 如何在运行时输出。完成标准是：无效的 optionsPreset 值会被 TypeScript 拒绝，同时支持的配置可以导入且不会出现所报告的运行时错误。

由索引模型根据 Issue 内容生成。