diff --git a/addons/addon-webgl/src/customGlyphs/CustomGlyphDefinitions.ts b/addons/addon-webgl/src/customGlyphs/CustomGlyphDefinitions.ts
index 7f89e98d..aa3ef321 100644
--- a/addons/addon-webgl/src/customGlyphs/CustomGlyphDefinitions.ts
+++ b/addons/addon-webgl/src/customGlyphs/CustomGlyphDefinitions.ts
@@ -3,9 +3,12 @@
  * @license MIT
  */
 
+import { CustomGlyphVectorType, type CustomGlyphDrawFunctionDefinition, type CustomGlyphPatternDefinition, type ICustomGlyphSolidOctantBlockVector, type ICustomGlyphVectorShape } from 'customGlyphs/Types';
+
 /* eslint-disable @typescript-eslint/naming-convention */
 
-import { CustomGlyphVectorType, type CustomGlyphDrawFunctionDefinition, type ICustomGlyphSolidOctantBlockVector, type ICustomGlyphVectorShape, type CustomGlyphPatternDefinition } from 'customGlyphs/CustomGlyphRasterizer';
+export const unifiedCharDefinitions: { [index: string]: ICustomGlyphVectorShape[] | undefined } = {
+};
 
 export const blockElementDefinitions: { [index: string]: ICustomGlyphSolidOctantBlockVector[] | undefined } = {
   // Block elements (0x2580-0x2590)
diff --git a/addons/addon-webgl/src/customGlyphs/CustomGlyphRasterizer.ts b/addons/addon-webgl/src/customGlyphs/CustomGlyphRasterizer.ts
index 8c77bdd7..e84883dd 100644
--- a/addons/addon-webgl/src/customGlyphs/CustomGlyphRasterizer.ts
+++ b/addons/addon-webgl/src/customGlyphs/CustomGlyphRasterizer.ts
@@ -5,33 +5,7 @@
 
 import { throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
 import { blockElementDefinitions, blockShadeComboDefinitions, boxDrawingDefinitions, patternCharacterDefinitions, powerlineDefinitions, rectangularShadeDefinitions, symbolsForLegacyComputingDefinitions } from 'customGlyphs/CustomGlyphDefinitions';
-
-export interface ICustomGlyphSolidOctantBlockVector {
-  x: number;
-  y: number;
-  w: number;
-  h: number;
-}
-
-/**
- * @param xp The percentage of 15% of the x axis.
- * @param yp The percentage of 15% of the x axis on the y axis.
- */
-export type CustomGlyphDrawFunctionDefinition = (xp: number, yp: number) => string;
-
-export interface ICustomGlyphVectorShape {
-  d: string;
-  type: CustomGlyphVectorType;
-  leftPadding?: number;
-  rightPadding?: number;
-}
-
-export const enum CustomGlyphVectorType {
-  FILL,
-  STROKE
-}
-
-export type CustomGlyphPatternDefinition = number[][];
+import { CustomGlyphVectorType, type CustomGlyphDrawFunctionDefinition, type CustomGlyphPatternDefinition, type ICustomGlyphSolidOctantBlockVector, type ICustomGlyphVectorShape } from 'customGlyphs/Types';
 
 /**
  * Try drawing a custom block element or box drawing character, returning whether it was
diff --git a/addons/addon-webgl/src/customGlyphs/Types.ts b/addons/addon-webgl/src/customGlyphs/Types.ts
new file mode 100644
index 00000000..d4aebc73
--- /dev/null
+++ b/addons/addon-webgl/src/customGlyphs/Types.ts
@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2021 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+export interface ICustomGlyphSolidOctantBlockVector {
+  x: number;
+  y: number;
+  w: number;
+  h: number;
+}
+
+/**
+ * @param xp The percentage of 15% of the x axis.
+ * @param yp The percentage of 15% of the x axis on the y axis.
+ */
+export type CustomGlyphDrawFunctionDefinition = (xp: number, yp: number) => string;
+
+export interface ICustomGlyphVectorShape {
+  d: string;
+  type: CustomGlyphVectorType;
+  leftPadding?: number;
+  rightPadding?: number;
+}
+
+export const enum CustomGlyphVectorType {
+  FILL,
+  STROKE
+}
+
+export type CustomGlyphPatternDefinition = number[][];