refactor: emoji deprecate

BREAKING CHANGE: `emoji` was deprecated

Author: cap-Bernardito

src/utils.js

@@ -210,6 +210,12 @@ function getModulesOptions(rawOptions, loaderContext) {
     }
   }
 
+  if (/\[emoji(?::(\d+))?\]/i.test(modulesOptions.localIdentName)) {
+    loaderContext.emitWarning(
+      'Emoji is deprecated and will be removed in next major release.'
+    );
+  }
+
   return modulesOptions;
 }
 

test/__snapshots__/modules-option.test.js.snap

@@ -699,6 +699,15 @@ Array [
 
 exports[`"modules" option should dedupe same modules in one module (issue #1037): warnings 1`] = `Array []`;
 
+exports[`"modules" option should emit warning when localIdentName is emoji: errors 1`] = `Array []`;
+
+exports[`"modules" option should emit warning when localIdentName is emoji: warnings 1`] = `
+Array [
+  "ModuleWarning: Module Warning (from \`replaced original path\`):
+(Emitted value instead of an instance of Error) Emoji is deprecated and will be removed in next major release.",
+]
+`;
+
 exports[`"modules" option should keep order: errors 1`] = `Array []`;
 
 exports[`"modules" option should keep order: module 1`] = `

test/modules-option.test.js

@@ -1389,4 +1389,16 @@ describe('"modules" option', () => {
     expect(getWarnings(stats)).toMatchSnapshot('warnings');
     expect(getErrors(stats)).toMatchSnapshot('errors');
   });
+
+  it('should emit warning when localIdentName is emoji', async () => {
+    const compiler = getCompiler('./modules/pure/pure.js', {
+      modules: {
+        localIdentName: '[emoji:0]',
+      },
+    });
+    const stats = await compile(compiler);
+
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
 });