KnodesCommunity/typedoc-plugins

import { mkdirSync, statSync, writeFileSync } from 'fs';

import { isFunction, isString, memoize } from 'lodash';
import { Application } from 'typedoc';

import { dirname, resolve } from '@knodes/typedoc-pluginutils/path';

export const rethrow = <T>( block: () => T, newErrorFactory: ( err: any ) => string | Error ) => {
    try {
        return block();
    } catch( err: any ){
        const newErr = newErrorFactory( err );
        if( isString( newErr ) ){
            throw new Error( newErr, { cause: err } );
        } else {
            throw newErr;
        }
    }
};

export const catchWrap = <T>( block: () => T, contextMessage: string | ( ( err: any ) => any ) ) =>
    rethrow( block, err => isFunction( contextMessage ) ? contextMessage( err ) : new Error( contextMessage, { cause: err } ) );

export const rootDir = memoize( ( app: Application ) => {
    const opts = app.options.getValue( 'options' );
    const stat = statSync( opts );
    if( stat.isDirectory() ){
        return opts;
    } else if( stat.isFile() ){
        return dirname( opts );
    } else {
        throw new Error();
    }
} );

export const Narrow = <T>( v: any ): v is T => true;
export const writeDiag = ( diagDir: string | undefined | null, file: string, content: () => string ) => {
    if( diagDir ){
        mkdirSync( diagDir, { recursive: true } );
        writeFileSync( resolve( diagDir, file ), content() );
    }
};