feat: use default config when config is empty (#1070)

* feat: use default config when config is empty

* pass description

packages/cli/package/src/lib/configs/initConfigNew.ts

@@ -32,6 +32,7 @@ import {
   CLI_NAME_FULL,
   SCHEMAS_DIR_NAME,
 } from "../const.js";
+import { dbg } from "../dbg.js";
 import { numToStr } from "../helpers/typesafeStringify.js";
 import { removeProperties } from "../helpers/utils.js";
 
@@ -156,6 +157,7 @@ export function getConfigInitFunction<
         expectedConfigPath,
         getDefaultConfig,
         getSchemaDirPath,
+        description,
       });
 
       if (getLatestConfigRes === null) {
@@ -274,13 +276,15 @@ async function getLatestConfig<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>({
   expectedConfigPath,
   getDefaultConfig,
   getSchemaDirPath,
+  description,
 }: {
   options: OptionsTuple<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>;
   expectedConfigPath: string;
   getDefaultConfig:
     | GetDefaultConfig<GetLatestConfig<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>>
     | undefined;
   getSchemaDirPath: GetPath | undefined;
+  description: string;
 }): Promise<{
   latestConfig: GetLatestConfig<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>;
   latestConfigString: string;
@@ -301,6 +305,18 @@ async function getLatestConfig<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>({
   let configString: string;
   let actualConfigPath = expectedConfigPath;
 
+  async function getDefaultConfigString() {
+    if (getDefaultConfig === undefined) {
+      return null;
+    }
+
+    return yamlDiffPatch(
+      `# ${description}\n\n`,
+      {},
+      { version: options.length - 1, ...(await getDefaultConfig()) },
+    );
+  }
+
   try {
     // try reading config file
     // if it fails, try replacing .yaml with .yml or vice versa and read again
@@ -320,23 +336,23 @@ async function getLatestConfig<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>({
       actualConfigPath = newConfigPath;
     }
   } catch {
-    if (getDefaultConfig === undefined) {
+    const defaultConfigString = await getDefaultConfigString();
+
+    if (defaultConfigString === null) {
       return null;
     }
 
-    const latestConfigOptions = options[options.length - 1];
-    const { description } = latestConfigOptions.schema;
+    configString = defaultConfigString;
+  }
 
-    assert(
-      description !== undefined,
-      `Unreachable. addVersionTitleAndDescriptionToConfigOptions function must ensure that description is defined`,
-    );
+  // if config file is empty for some reason - try using default
+  if (configString.trim() === "") {
+    dbg(`Config at ${actualConfigPath} is empty. Using default config`);
+    const defaultConfigString = await getDefaultConfigString();
 
-    configString = yamlDiffPatch(
-      `# ${description}\n\n`,
-      {},
-      { version: options.length - 1, ...(await getDefaultConfig()) },
-    );
+    if (defaultConfigString !== null) {
+      configString = defaultConfigString;
+    }
   }
 
   const currentConfigUnknown: unknown = parse(configString);
@@ -346,7 +362,7 @@ async function getLatestConfig<C0, C1, C2, C3, C4, C5, C6, C7, C8, C9>({
     currentConfigUnknown === null
   ) {
     return commandObj.error(
-      `Invalid config at ${color.yellow(actualConfigPath)}. Expected to be an object`,
+      `Invalid config at ${color.yellow(actualConfigPath)}. Expected to be an object. Got: ${configString}`,
     );
   }