First of all, after creating a views folder where I specified in main.ts, I added my contract.hbs file in it, but I was getting an error that main.hbs cannot be found in layouts. Then I copied contract.ts and pasted it as main.hbs under views/layouts directory. Then I pasted it into dist and the rendering process worked. However, when I was making a few changes, I realized that the changes I made were not applied to the file I was rendering and while trying a few things, I got the error I showed again. I see the problem as the file not being copied to dist, but it could be something else since I don’t fully understand it.

views path: /Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/views

Error;

Error: Failed to lookup view "contract" in views directory "/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/dist/views"
    at Function.render (/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/node_modules/express/lib/application.js:597:17)
    at ServerResponse.render (/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/node_modules/express/lib/response.js:1048:7)
    at htmlContent (/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/app/routes/settings/controller/documents.controller.ts:46:21)
    at new Promise (<anonymous>)
    at DocumentsController.getContract (/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/app/routes/settings/controller/documents.controller.ts:45:39)
    at async /Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/node_modules/@nestjs/core/router/router-execution-context.js:46:28
    at async /Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/node_modules/@nestjs/core/router/router-proxy.js:9:17 {
  view: View {
    defaultEngine: 'hbs',
    ext: '.hbs',
    name: 'contract',
    root: '/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/dist/views',
    engine: [Function: bound renderView] AsyncFunction,
    path: undefined
  }
}
HttpError: Failed to lookup view "contract" in views directory "/Users/beratkaraaslan/Documents/pluspayprojects/pluspay-api-panel/dist/views"

main.ts;

   app.useStaticAssets(join(__dirname, '.', 'public'))
  app.setBaseViewsDir(join(__dirname, '.', 'views'));
  app.setViewEngine('hbs');
  app.engine('hbs', hbs({ extname: 'hbs' }));

controller.ts;

 async getContract(
        @Res() res: Response,
        @BossPlusAuthUser() user: JwtUserBossPlus,
        @Query() signature?: GetContractQueryDto
    ) {
        try {
            const data = await this.service.getContract(user, signature?.signature);

            const htmlContent = await new Promise<string>((resolve, reject) => {
                res.render('contract', data, (err, html) => {
                    if (err) {
                        reject(err);
                    } else {
                        resolve(html);
                    }
                });
            });

            const base64Content = Buffer.from(htmlContent).toString('base64');

            res.json({ base64: base64Content });
        } catch (error) {
            console.error(error);
            throw new HttpError(error.message, error.status);
        }
    }

nest-cli.json;

{
  "collection": "@nestjs/schematics",
  "sourceRoot": "app",
  "compilerOptions": {
    "assets": [
      {
        "include": "views/**/*",
        "outDir": "dist/views"
      }
    ]
  }
}

package.json;

"scripts": {
"postbuild": "cp -R views dist/views",
"start:dev": "TZ=Europe/Istanbul nest start --watch",
...
...
...
}