import { promises as fs } from "fs";
import path from "path";
import { fileExists } from "../file-exists";
import { recursiveReadDir } from "../recursive-readdir";
export async function getTypeScriptIntent(baseDir, intentDirs, tsconfigPath) {
    const resolvedTsConfigPath = path.join(baseDir, tsconfigPath);
    // The integration turns on if we find a `tsconfig.json` in the user's
    // project.
    const hasTypeScriptConfiguration = await fileExists(resolvedTsConfigPath);
    if (hasTypeScriptConfiguration) {
        const content = await fs.readFile(resolvedTsConfigPath, {
            encoding: "utf8"
        }).then((txt)=>txt.trim(), ()=>null);
        return {
            firstTimeSetup: content === "" || content === "{}"
        };
    }
    // Next.js also offers a friendly setup mode that bootstraps a TypeScript
    // project for the user when we detect TypeScript files. So, we need to check
    // the `pages/` directory for a TypeScript file.
    // Checking all directories is too slow, so this is a happy medium.
    const tsFilesRegex = /.*\.(ts|tsx)$/;
    const excludedRegex = /(node_modules|.*\.d\.ts$)/;
    for (const dir of intentDirs){
        const typescriptFiles = await recursiveReadDir(dir, {
            pathnameFilter: (name)=>tsFilesRegex.test(name),
            ignoreFilter: (name)=>excludedRegex.test(name)
        });
        if (typescriptFiles.length) {
            return {
                firstTimeSetup: true
            };
        }
    }
    return false;
}

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