Merge remote-tracking branch 'vectorjohn/master'

- Merge in the changes that vectorjohn made in a parallel PR (filtering
functions at the plugin level)
- Use lodash's pickBy to simplify some logic
- Fix an issue with mixed export syntax (export vs module.exports)
- Removed redundant tests

Fixes #198

Author: Sean Dawson

src/Serverless.d.ts

@@ -1,4 +1,5 @@
 declare namespace Serverless {
+
   interface Instance {
     cli: {
       log(str: string): void
@@ -8,18 +9,7 @@ declare namespace Serverless {
       servicePath: string
     }
 
-    service: {
-      provider: {
-        name: string
-        runtime?: string
-      }
-      functions: {
-        [key: string]: Serverless.Function
-      }
-      package: Serverless.Package
-      getAllFunctions(): string[]
-    }
-
+    service: Service
     pluginManager: PluginManager
   }
 
@@ -42,6 +32,18 @@ declare namespace Serverless {
     individually?: boolean
   }
 
+  type FunctionMap = Record<string, Serverless.Function>
+
+  interface Service {
+    provider: {
+      name: string
+      runtime?: string
+    }
+    functions: FunctionMap
+    package: Serverless.Package
+    getAllFunctions(): string[]
+  }
+
   interface PluginManager {
     spawn(command: string): Promise<void>
   }

src/index.ts

@@ -79,20 +79,22 @@ export class TypeScriptPlugin {
     const { options } = this
     const { service } = this.serverless
 
-    if (options.function) {
-      return {
-        [options.function]: service.functions[this.options.function]
-      }
-    }
-
-    return service.functions
+    const allFunctions = options.function ? {
+      [options.function]: service.functions[this.options.function]
+    } : service.functions
+
+    // Ensure we only handle runtimes that support Typescript
+    return _.pickBy(allFunctions, ({runtime}) => {
+      const resolvedRuntime = runtime || service.provider.runtime
+      // If runtime is not specified on the function or provider, default to previous behaviour
+      return resolvedRuntime === undefined ? true : resolvedRuntime.match(/^node/)
+    })
   }
 
   get rootFileNames() {
     return typescript.extractFileNames(
       this.originalServicePath,
       this.serverless.service.provider.name,
-      this.serverless.service.provider.runtime,
       this.functions
     )
   }
@@ -235,7 +237,7 @@ export class TypeScriptPlugin {
     }
 
     if (service.package.individually) {
-      const functionNames = service.getAllFunctions()
+      const functionNames = Object.keys(this.functions)
       functionNames.forEach(name => {
         service.functions[name].package.artifact = path.join(
           this.originalServicePath,
@@ -276,4 +278,4 @@ export class TypeScriptPlugin {
   }
 }
 
-module.exports = TypeScriptPlugin
+export default TypeScriptPlugin

src/typescript.ts

@@ -18,7 +18,7 @@ export function makeDefaultTypescriptConfig() {
   return defaultTypescriptConfig
 }
 
-export function extractFileNames(cwd: string, provider: string, globalRuntime?: string, functions?: { [key: string]: Serverless.Function }): string[] {
+export function extractFileNames(cwd: string, provider: string, functions?: { [key: string]: Serverless.Function }): string[] {
   // The Google provider will use the entrypoint not from the definition of the
   // handler function, but instead from the package.json:main field, or via a
   // index.js file. This check reads the current package.json in the same way
@@ -46,13 +46,7 @@ export function extractFileNames(cwd: string, provider: string, globalRuntime?:
     }
   }
 
-  const runtimeIsNode = (runtime: string) => runtime.toLowerCase().startsWith('node')
-  const shouldProcessFunction = (fn: Serverless.Function) =>
-    (fn.runtime !== undefined && runtimeIsNode(fn.runtime)) ||
-    (fn.runtime === undefined && (globalRuntime === undefined || runtimeIsNode(globalRuntime)))
-
   return _.values(functions)
-    .filter(shouldProcessFunction)
     .map(fn => fn.handler)
     .map(h => {
       const fnName = _.last(h.split('.'))

tests/index.functions.test.ts

@@ -0,0 +1,110 @@
+import TypeScriptPlugin from '../src'
+
+const createInstance = (functions: Serverless.FunctionMap, globalRuntime?: string): Serverless.Instance => ({
+  cli: {
+    log: jest.fn()
+  },
+  config: {
+    servicePath: 'servicePath'
+  },
+  service: {
+    provider: {
+      name: 'aws',
+      runtime: globalRuntime
+    },
+    package: {
+      individually: true,
+      include: [],
+      exclude: []
+    },
+    functions,
+    getAllFunctions: jest.fn()
+  },
+  pluginManager: {
+      spawn: jest.fn()
+  }
+})
+
+describe('functions', () => {
+  const functions: Serverless.FunctionMap = {
+    hello: {
+        handler: 'tests/assets/hello.handler',
+        package: {
+            include: [],
+            exclude: []
+        }
+    },
+    world: {
+        handler: 'tests/assets/world.handler',
+        runtime: 'nodejs12.x',
+        package: {
+            include: [],
+            exclude: []
+        },
+    },
+    js: {
+        handler: 'tests/assets/jsfile.create',
+        package: {
+            include: [],
+            exclude: []
+        }
+    },
+    notActuallyTypescript: {
+        handler: 'tests/assets/jsfile.create',
+        package: {
+            include: [],
+            exclude: []
+        },
+        runtime: 'go1.x'
+    },
+  }
+
+  describe('when the provider runtime is Node', () => {
+    it('can get filter out non node based functions', () => {
+        const slsInstance = createInstance(functions, 'nodejs10.x')
+        const plugin = new TypeScriptPlugin(slsInstance, {})
+
+        expect(
+          Object.values(plugin.functions).map(fn => fn.handler),
+        ).toEqual(
+            [
+                'tests/assets/hello.handler',
+                'tests/assets/world.handler',
+                'tests/assets/jsfile.create',
+            ],
+        )
+    })
+  })
+
+  describe('when the provider runtime is not Node', () => {
+      it('can get filter out non node based functions', () => {
+        const slsInstance = createInstance(functions, 'python2.7')
+        const plugin = new TypeScriptPlugin(slsInstance, {})
+
+        expect(
+          Object.values(plugin.functions).map(fn => fn.handler),
+        ).toEqual(
+            [
+                'tests/assets/world.handler',
+            ],
+        )
+      })
+  })
+
+  describe('when the provider runtime is undefined', () => {
+    it('can get filter out non node based functions', () => {
+        const slsInstance = createInstance(functions)
+        const plugin = new TypeScriptPlugin(slsInstance, {})
+
+        expect(
+          Object.values(plugin.functions).map(fn => fn.handler),
+        ).toEqual(
+            [
+                'tests/assets/hello.handler',
+                'tests/assets/world.handler',
+                'tests/assets/jsfile.create',
+            ],
+        )
+    })
+  })
+})

tests/typescript.extractFileName.test.ts

@@ -3456,9 +3456,9 @@ type-check@~0.3.2:
     prelude-ls "~1.1.2"
 
 typescript@^3.4.1:
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.1.tgz#b6691be11a881ffa9a05765a205cb7383f3b63c6"
-  integrity sha512-3NSMb2VzDQm8oBTLH6Nj55VVtUEpe/rgkIzMir0qVoLyjDZlnMBva0U6vDiV3IH+sl/Yu6oP5QwsAQtHPmDd2Q==
+  version "3.7.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.5.tgz#0692e21f65fd4108b9330238aac11dd2e177a1ae"
+  integrity sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==
 
 uglify-js@^3.1.4:
   version "3.5.2"