fix: use excalidraw asset path in fonts when exporting to svg (#5065)

* fix: use excalidraw asset path in fonts when exporting

* fix

* fix

* introduce env variables and determine asset path correctly

* fix snaps

* use env vars to determine pkg name and version

* update docs

* quotes

src/packages/excalidraw/CHANGELOG.md

@@ -23,6 +23,7 @@ Please add the latest change on the top under the correct section.
 
 #### Fixes
 
+- Use `window.EXCALIDRAW_ASSET_PATH` for fonts when exporting to svg [#5065](https://github.com/excalidraw/excalidraw/pull/5065).
 - Library menu now properly rerenders if open when library is updated using `updateScene({ libraryItems })` [#4995](https://github.com/excalidraw/excalidraw/pull/4995).
 
 #### Refactor

src/packages/excalidraw/env.js

@@ -1,14 +1,18 @@
 const dotenv = require("dotenv");
 const { readFileSync } = require("fs");
-
+const pkg = require("./package.json");
 const parseEnvVariables = (filepath) => {
-  return Object.entries(dotenv.parse(readFileSync(filepath))).reduce(
+  const envVars = Object.entries(dotenv.parse(readFileSync(filepath))).reduce(
     (env, [key, value]) => {
       env[key] = JSON.stringify(value);
       return env;
     },
     {},
   );
+  envVars.PKG_NAME = JSON.stringify(pkg.name);
+  envVars.PKG_VERSION = JSON.stringify(pkg.version);
+  envVars.IS_EXCALIDRAW_NPM_PACKAGE = JSON.stringify(true);
+  return envVars;
 };
 
 module.exports = { parseEnvVariables };

src/packages/excalidraw/publicPath.js

@@ -1,9 +1,8 @@
 import { ENV } from "../../constants";
-import pkg from "./package.json";
 if (process.env.NODE_ENV !== ENV.TEST) {
   /* eslint-disable */
   /* global __webpack_public_path__:writable */
   __webpack_public_path__ =
     window.EXCALIDRAW_ASSET_PATH ||
-    `https://unpkg.com/${pkg.name}@${pkg.version}/dist/`;
+    `https://unpkg.com/${process.env.PKG_NAME}@${process.env.PKG_VERSION}/dist/`;
 }