Load yaml files using the failsafe schema option

__tests__/fixtures/labels.failsafe_schema.yml

@@ -0,0 +1,31 @@
+## parses colors declared as integer values - different color, update
+- # bot
+  name: ":robot: bot"
+  color: 123456
+  description: ""
+## parses colors declared as regular text, no hexcode - same color, skip
+- # enhancement
+  name: ":sparkles: enhancement"
+  color: 0054ca
+  description: ""
+## parses colors declared as string hex codes - same color, skip
+- # bug
+  name: ":bug: bug"
+  color: "#b60205"
+  description: ""
+# parses regular text for the name field - new label, create
+- # new label
+  name: This is a new label
+  color: "#0e8a16"
+  description: ""
+# parses regular text for the description field - existing label, update
+- # upstream
+  name: ":eyes: upstream"
+  color: "fbca04"
+  description: This is a new description
+# parses text for the from_name field - existing label, rename
+- # question
+  name: ":question: :question: question"
+  color: "3f51b5"
+  description: ""
+  from_name: ":question: question"

__tests__/labeler.test.ts

@@ -88,6 +88,25 @@ const cases = [
       delete: 11,
       error: 0
     }
+  ],
+  [
+    'labels.failsafe_schema.yml',
+    {
+      githubToken: 'n/a',
+      yamlFile: path.join(fixturesDir, 'labels.failsafe_schema.yml'),
+      skipDelete: true,
+      dryRun: true,
+      exclude: []
+    },
+    {
+      skip: 2,
+      exclude: 0,
+      create: 1,
+      update: 2,
+      rename: 1,
+      delete: 16,
+      error: 0
+    }
   ]
 ];
 

src/labeler.ts

@@ -198,7 +198,7 @@ export class Labeler {
   }
 
   private static async loadLabelsFromYAML(yamlFile: fs.PathLike): Promise<Label[]> {
-    return yaml.load(fs.readFileSync(yamlFile, {encoding: 'utf-8'})) as Promise<Label[]>;
+    return yaml.load(fs.readFileSync(yamlFile, {encoding: 'utf-8'}), {schema: yaml.FAILSAFE_SCHEMA}) as Promise<Label[]>;
   }
 
   private async computeActionLabels(): Promise<Label[]> {