Make the package buildable and testable

Author: aurelien-reeves

package.cjs.json

@@ -1,3 +1,4 @@
 {
+    "name": "@cucumber/message-streams",
     "type": "commonjs"
 }

package.json

@@ -38,6 +38,7 @@
     "@types/mocha": "9.1.0",
     "@types/node": "16.11.26",
     "mocha": "9.2.2",
+    "ts-node": "^10.7.0",
     "typescript": "4.6.2"
   },
   "bugs": {

src/NdjsonToMessageStream.ts

@@ -22,7 +22,13 @@ export default class NdjsonToMessageStream extends Transform {
     }
     this.buffer += Buffer.isBuffer(chunk) ? chunk.toString('utf-8') : chunk
     const lines = this.buffer.split('\n')
-    this.buffer = lines.pop()
+
+    if (!lines.length) {
+      callback()
+      return
+    }
+
+    this.buffer = lines.pop() as string
     for (const line of lines) {
       if (line.trim().length > 0) {
         try {

tsconfig.build-cjs.json

@@ -1,11 +1,8 @@
 {
-  "extends": "../../tsconfig.build-cjs.json",
+  "extends": "./tsconfig.build.json",
   "compilerOptions": {
-    "rootDir": ".",
-    "outDir": "dist/cjs"
+    "outDir": "dist/cjs",
+    "target": "ES5",
+    "module": "CommonJS",
   },
-  "include": [
-    "src",
-    "test"
-  ],
 }

tsconfig.build-esm.json

@@ -1,11 +1,8 @@
 {
-  "extends": "../../tsconfig.build-esm.json",
+  "extends": "./tsconfig.build.json",
   "compilerOptions": {
-    "rootDir": ".",
+    "target": "ES6",
+    "module": "ES6",
     "outDir": "dist/esm"
   },
-  "include": [
-    "src",
-    "test"
-  ],
 }

tsconfig.build.json

@@ -0,0 +1,18 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "composite": true,
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+    "target": "es6",
+    "module": "commonjs",
+    "rootDir": ".",
+    "outDir": "dist",
+    "noEmit": false
+  },
+  "include": [
+    "src",
+    "test"
+  ]
+}

tsconfig.json

@@ -1,3 +1,22 @@
 {
-  "extends": "../../tsconfig.esm.json"
+  "compilerOptions": {
+    "declaration": true,
+    "target": "es2018",
+    "lib": [
+      "es2019",
+    ],
+    "sourceMap": true,
+    "allowJs": false,
+    "resolveJsonModule": true,
+    "module": "esNext",
+    "esModuleInterop": true,
+    "noImplicitAny": true,
+    "moduleResolution": "node",
+    "outDir": "dist",
+    "downlevelIteration": true,
+    "skipLibCheck": true,
+    "strictNullChecks": true,
+    "experimentalDecorators": true,
+    "noEmit": true
+  }
 }