fix: sanitize special characters from codegen (#1503)

Author: saihaj

.changeset/slow-carpets-smell.md

@@ -0,0 +1,5 @@
+---
+'@graphprotocol/graph-cli': patch
+---
+
+sanitize special characters in codegeneration

packages/cli/src/protocols/ethereum/codegen/abi.ts

@@ -14,6 +14,8 @@ const doFixtureCodegen = fs.existsSync('./fixtures.yaml');
 export default class AbiCodeGenerator {
   constructor(private abi: ABI) {
     this.abi = abi;
+    // Sanitize the name of the ABI to make it a valid class name
+    this.abi.name = abi.name.replace(/[!@#$%^&*()_+\-=[\]{};':"\\|,.<>/?]+/g, '_');
   }
 
   generateModuleImports() {