why export function set interface is error

[LLLLLamHo]

TypeScript Version: 2.7.5-dev.2018.3.14

Search Terms:
interface
Code

var glob = require( "glob" );

interface ConfigData { 
    include: number[],
    exclude: number[]
}

function getIncludefiles ( config: ConfigData ): any {

    let { include, exclude }: { include: number[], exclude: number[] } = config;
    let includeCheckFiles: number[] = [];
    let excludeCheckFiles: number[] = [];

    // 包含文件
    if ( include && include.length != 0 ) {
        for ( let i = 0; i < include.length; i++ ) {
            let files: number[] = glob.sync( include[ i ], { cwd: process.cwd() } );
            includeCheckFiles = includeCheckFiles.concat( files );
        }
    }
    //排除文件
    if ( exclude && exclude.length != 0 ) {
        for ( let i = 0; i < exclude.length; i++ ) {
            let files: number[] = glob.sync( exclude[ i ], { cwd: process.cwd() } );
            excludeCheckFiles = excludeCheckFiles.concat( files );
        }
    }
    //最终需要检测的文件
    if ( excludeCheckFiles && excludeCheckFiles.length > 0 ) {
        for ( let i = 0; i < excludeCheckFiles.length; i++ ) {
            let index: number = includeCheckFiles.indexOf( excludeCheckFiles[ i ] );
            if ( index != -1 ) {
                includeCheckFiles.splice( index, 1 );
            }
        }
    }

    return includeCheckFiles;
}


export = getIncludefiles;

Expected behavior:

no error

Actual behavior:

error TS4078: Parameter 'config' of exported function has or is using private name 'ConfigData'.
How should I set it up?

First, if possible it would be better to use a default export over export = (export default function getIncludefiles(..) { ... }). Then you can add export in front of the interface (export interface ConfigData { ... }) and they can be imported separately with import getIncludefiles, { ConfigData } from "./module-path";.

If you really want an export = you have to put the type in a namespace merged with the function:

namespace getIncludefiles {
    export interface ConfigData {
        include: number[],
        exclude: number[]
    }
}

function getIncludefiles ( config: getIncludefiles.ConfigData ): any { ... }
export = getIncludefiles;

Or you could write the type inline: config: { include: number[], exclude: number[] }

[LLLLLamHo]

I did exactly what you said, but I didn't have any hints in the editor.

before:

after:

Am I still doing something wrong?

Those are both valid hints -- neither is wrong.

[LLLLLamHo]

@Andy-MS Thank you very much for your patience.

[typescript-bot]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.