fix: error if esm.output was not present

.changeset/loud-buckets-tie.md

@@ -0,0 +1,6 @@
+---
+"clarigen-deno": patch
+---
+
+- Fixed a bug where an error would throw if there was no `output` in the `esm` section of config
+- Added `chain.burnBlockHeight`

src/chain.ts

@@ -229,6 +229,13 @@ export class Chain {
     return this.chain.blockHeight;
   }
 
+  // N.B.: in Clarinet v1, `burn-block-height` is one
+  // less than `burn-block`. This is undocumented and may
+  // change.
+  public get burnBlockHeight() {
+    return this.blockHeight - 1;
+  }
+
   mineEmptyBlock(count: number | bigint = 1) {
     return this.chain.mineEmptyBlock(Number(count));
   }

src/cli/config.ts

@@ -24,7 +24,7 @@ export enum OutputType {
 const ConfigFileSchema = Schema({
   clarinet: string,
   [OutputType.ESM]: Schema({
-    output: string,
+    output: string.optional(),
     include_accounts: boolean.optional(),
     after: string.optional(),
   }).optional(),