fix: Add .webm to know file types (#4171)

Author: Jason3S

packages/cspell-lib/src/LanguageIds.test.ts

@@ -100,21 +100,23 @@ describe('Validate LanguageIds', () => {
     });
 
     test.each`
-        filename          | expected
-        ${'README.md'}    | ${false}
-        ${'run.exe'}      | ${true}
-        ${'lib.obj'}      | ${true}
-        ${'lib.dll'}      | ${true}
-        ${'lib.o'}        | ${true}
-        ${'image.PNG'}    | ${true}
-        ${'image.JPG'}    | ${true}
-        ${'image.gif'}    | ${true}
-        ${'picture.jpeg'} | ${true}
-        ${'picture.jpg'}  | ${true}
-        ${'doc.txt'}      | ${false}
-        ${'lock'}         | ${false}
-        ${'Gemfile'}      | ${false}
-        ${'.cspellcache'} | ${false}
+        filename           | expected
+        ${'README.md'}     | ${false}
+        ${'run.exe'}       | ${true}
+        ${'lib.obj'}       | ${true}
+        ${'lib.dll'}       | ${true}
+        ${'lib.o'}         | ${true}
+        ${'image.PNG'}     | ${true}
+        ${'image.JPG'}     | ${true}
+        ${'image.gif'}     | ${true}
+        ${'picture.jpeg'}  | ${true}
+        ${'picture.jpg'}   | ${true}
+        ${'doc.txt'}       | ${false}
+        ${'lock'}          | ${false}
+        ${'Gemfile'}       | ${false}
+        ${'.cspellcache'}  | ${false}
+        ${'my-video.webm'} | ${true}
+        ${'my-logo.svg'}   | ${false}
     `('isGeneratedExt $filename => $expected', ({ filename, expected }) => {
         expect(LangId.isBinaryFile(filename)).toBe(expected);
     });

packages/cspell-lib/src/LanguageIds.ts

@@ -255,6 +255,7 @@ export const languageExtensionDefinitions: LanguageDefinitions = [
     { id: 'jar', extensions: ['.jar'], format: 'Binary' },
     { id: 'spv', extensions: ['.spv'], format: 'Binary', description: 'SPSS Output Document' },
     { id: 'mdb', extensions: ['.mdb'], format: 'Binary', description: 'Microsoft Access DB' },
+    { id: 'webm', extensions: ['.webm'], format: 'Binary', description: 'WebM is an audiovisual media file format.' },
 ];
 
 export type LanguageId = string;