feat: fallback on global @icp-sdk/bindgen for generating did files

src/services/functions/build/build.did.services.ts

@@ -10,6 +10,7 @@ import {
   SATELLITE_CUSTOM_DID_FILE
 } from '../../../constants/build.constants';
 import {DEVELOPER_PROJECT_SATELLITE_DECLARATIONS_PATH} from '../../../constants/dev.constants';
+import {checkLocalIcpBindgen} from '../../../utils/build.bindgen.utils';
 import {readPackageJson} from '../../../utils/pkg.utils';
 import {detectPackageManager} from '../../../utils/pm.utils';
 
@@ -46,15 +47,21 @@ export const generateDid = async () => {
 const executeIcpBindgen = async () => {
   const pm = detectPackageManager();
 
-  const command = pm === 'npm' || isNullish(pm) ? 'npx' : pm;
+  // The assertion on checkIcpBindgen() which requires the installation of icp-bindgen
+  // is performed earlier to reaching this point. Therefore, we can optimistically
+  // assume that if no tool is available locally, it should be available globally.
+  const {valid: localValid} = await checkLocalIcpBindgen({pm});
+  const withGlobalCmd = localValid !== true;
+
+  const localCommand = pm === 'npm' || isNullish(pm) ? 'npx' : pm;
 
   // --actor-disabled: skip generating actor files, since we handle those ourselves
   // --force: overwrite files. Required; otherwise, icp-bindgen would delete files at preprocess,
   // which causes issues when multiple .did files are located in the same folder.
   await spawn({
-    command,
+    command: withGlobalCmd ? 'icp-bindgen' : localCommand,
     args: [
-      'icp-bindgen',
+      ...(withGlobalCmd ? [] : ['icp-bindgen']),
       '--did-file',
       SATELLITE_CUSTOM_DID_FILE,
       '--out-dir',

src/utils/build.bindgen.utils.ts

@@ -51,7 +51,7 @@ export const checkIcpBindgen = async ({
   return {valid: true};
 };
 
-const checkLocalIcpBindgen = async ({
+export const checkLocalIcpBindgen = async ({
   pm
 }: {
   pm: PackageManager | undefined;