fix: make adjustments to puya-ts-transformer for it to be used with ts-jest package

Author: boblat

src/test-transformer/index.ts

@@ -67,3 +67,9 @@ programTransformer.factory = createProgramFactory(defaultTransformerConfig)
  */
 export const puyaTsTransformer: ts.TransformerFactory<ts.SourceFile> &
   ((config: Partial<TransformerConfig>) => ts.TransformerFactory<ts.SourceFile>) = programTransformer as DeliberateAny
+
+// exporting values needed by ts-jest for a transformer to work
+// https://github.com/kulshekhar/ts-jest/tree/main/src/transformers
+export const name = 'puyaTsTransformer'
+export const version = '0.1.0'
+export const factory = createProgramFactory(defaultTransformerConfig)

src/test-transformer/visitors.ts

@@ -2,6 +2,7 @@ import { LoggingContext, ptypes, SourceLocation, TypeResolver } from '@algorandf
 import path from 'path'
 import ts from 'typescript'
 import type { TypeInfo } from '../encoders'
+import type { DeliberateAny } from '../typescript-helpers'
 import { instanceOfAny } from '../typescript-helpers'
 import type { TransformerConfig } from './index'
 import { nodeFactory } from './node-factory'
@@ -39,9 +40,11 @@ export class SourceFileVisitor {
     program: ts.Program,
     private config: TransformerConfig,
   ) {
-    const typeChecker = program.getTypeChecker()
+    // ts-jest would pass a TsCompilerInstance as program parameter whereas rollup-plugin-typescript would pass a ts.Program
+    const programInstance = (Object.hasOwn(program, 'program') ? (program as DeliberateAny).program : program) as ts.Program
+    const typeChecker = programInstance.getTypeChecker()
     const loggingContext = LoggingContext.create()
-    const typeResolver = new TypeResolver(typeChecker, program.getCurrentDirectory())
+    const typeResolver = new TypeResolver(typeChecker, programInstance.getCurrentDirectory())
     this.helper = {
       additionalStatements: [],
       resolveType(node: ts.Node): ptypes.PType {
@@ -59,7 +62,7 @@ export class SourceFileVisitor {
         return s && s.flags & ts.SymbolFlags.Alias ? typeChecker.getAliasedSymbol(s) : s
       },
       sourceLocation(node: ts.Node): SourceLocation {
-        return SourceLocation.fromNode(node, program.getCurrentDirectory())
+        return SourceLocation.fromNode(node, programInstance.getCurrentDirectory())
       },
     }
   }