fix(cli): properly error handling

- Handle all errors centrally and properly set process exit code
- Use console.warn where appropriate to funnel messaged to stderr
- Do not ignore errors when loading config file

Author: George Taveras

lib/cli.ts

@@ -1,6 +1,7 @@
 #!/usr/bin/env node
 
 import yargs from "yargs";
+import { alerts } from "./core";
 import { IMPLEMENTATIONS } from "./implementations";
 import { main } from "./main";
 import { Aliases, NAME_FORMATS } from "./sass";
@@ -145,4 +146,8 @@ const { _: patterns, ...rest } = yargs
   .parseSync();
 
 // eslint-disable-next-line @typescript-eslint/no-floating-promises
-main(patterns[0] as string, { ...rest });
+main(patterns[0] as string, { ...rest }).catch((error) => {
+  alerts.error("Encountered an error while generating type definitions.");
+  alerts.error(error);
+  process.exitCode = 1;
+});

lib/core/alerts.ts

@@ -34,10 +34,10 @@ const withLogLevelsRestriction =
 
 const error = withLogLevelsRestriction(
   ["verbose", "error", "info"],
-  (message: string) => console.log(chalk.red(message))
+  (message: string) => console.warn(chalk.red(message))
 );
 const warn = withLogLevelsRestriction(["verbose"], (message: string) =>
-  console.log(chalk.yellowBright(message))
+  console.warn(chalk.yellowBright(message))
 );
 const notice = withLogLevelsRestriction(
   ["verbose", "info"],

lib/load.ts

@@ -1,7 +1,7 @@
 import { bundleRequire } from "bundle-require";
 import JoyCon from "joycon";
 import path from "path";
-import { alerts, CLIOptions, ConfigOptions } from "./core";
+import { CLIOptions, ConfigOptions } from "./core";
 import { getDefaultImplementation } from "./implementations";
 import { nameFormatDefault } from "./sass";
 import {
@@ -39,25 +39,16 @@ export const loadConfig = async (): Promise<
   );
 
   if (configPath) {
-    try {
-      const configModule = await bundleRequire({
-        filepath: configPath,
-      });
+    const configModule = await bundleRequire({
+      filepath: configPath,
+    });
 
-      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-      const config: ConfigOptions =
-        // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-        configModule.mod.config || configModule.mod.default || configModule.mod;
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+    const config: ConfigOptions =
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+      configModule.mod.config || configModule.mod.default || configModule.mod;
 
-      return config;
-    } catch (error) {
-      alerts.error(
-        // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
-        `An error occurred loading the config file "${configPath}":\n${error}`
-      );
-
-      return {};
-    }
+    return config;
   }
 
   return {};