feat: validation errors

packages/process/package.json

@@ -1,6 +1,6 @@
 {
     "name": "svelte-markdoc-preprocess",
-    "version": "0.3.1",
+    "version": "0.3.2",
     "description": "A Svelte preprocessor that allows you to use Markdoc.",
     "type": "commonjs",
     "keywords": [
@@ -27,6 +27,7 @@
         "@markdoc/markdoc": "^0.3.0",
         "html-escaper": "^3.0.3",
         "js-yaml": "^4.1.0",
+        "lovely-logs": "^1.2.2",
         "svelte": "^4.0.0",
         "typescript": "^5.0.0"
     },

packages/process/src/log.ts

@@ -0,0 +1,38 @@
+import { createLogger, Logger } from 'lovely-logs';
+import type { ValidateError } from '@markdoc/markdoc';
+
+createLogger({
+    platform: 'console',
+    timestampEnabled: false,
+});
+
+export function log_validation_error(
+    validate_error: ValidateError,
+    filename: string,
+) {
+    const { error } = validate_error;
+    const prefix = `[svelte-markdoc-preprocess] ${filename}:${validate_error.lines.join(
+        ':',
+    )} (${error.id}) `;
+
+    switch (error.level) {
+        case 'debug':
+        case 'info':
+            return Logger.info(prefix, error.message);
+        case 'warning':
+            return Logger.warn(prefix, error.message);
+        case 'error':
+        case 'critical':
+            return Logger.error(prefix, error.message);
+    }
+}
+
+export function log_error(message: string) {
+    Logger.error(`[svelte-markdoc-preprocess]: ${message}`);
+}
+export function log_warning(message: string) {
+    Logger.warn(`[svelte-markdoc-preprocess]: ${message}`);
+}
+export function log_info(message: string) {
+    Logger.info(`[svelte-markdoc-preprocess]: ${message}`);
+}

packages/process/src/transformer.ts

@@ -6,6 +6,7 @@ import {
     NodeType,
     Tag,
     ConfigType,
+    validate,
 } from '@markdoc/markdoc';
 import {
     ScriptTarget,
@@ -30,6 +31,7 @@ import {
 import * as default_schema from './default_schema';
 import type { Config } from './config';
 import { LAYOUT_IMPORT, NODES_IMPORT, TAGS_IMPORT } from './constants';
+import { log_error, log_validation_error } from './log';
 
 type Var = {
     name: string;
@@ -140,6 +142,11 @@ export function transformer({
         validation: config?.validation,
     };
 
+    const errors = validate(ast, configuration);
+    for (const error of errors) {
+        log_validation_error(error, filename);
+    }
+
     /**
      * transform the ast with svelte components
      */
@@ -453,7 +460,11 @@ function create_schema(tags: Record<string, Schema>): void {
             }
             write_to_file(target_file, content);
         } catch (err) {
-            console.error(err);
+            if (err instanceof Error) {
+                log_error(err.message);
+            } else {
+                console.error(err);
+            }
         }
     }
 }