Deno on Win 10 TS Error

[ekaone]

Hi Everyone,

I am try Oak middleware as as example below:

import { Application } from "https://deno.land/x/oak/mod.ts";
const app = new Application();
app.use((ctx) => {
  ctx.response.body = "Hello world!";
});
await app.listen("127.0.0.1:8000");

I already install typescript as global npm install -g typescript, and run Deno on terminal with deno --allow-net .\oak.ts, my operating system Win 10 is latest version update, and i also try running as Administrator or another user on terminal and with same Error output, anyone can point some best a away..?, thanks in advance

Error appear as below:

Compile file:///D:/deno-sample/oak.ts
error TS2322: Type '(_: Uint8Array) => Promise<number | null>' is not assignable to type '(p: Uint8Array) => Promise<number | unique symbol>'.
  Type 'Promise<number | null>' is not assignable to type 'Promise<number | unique symbol>'.

► https://deno.land/std@0.51.0/http/_io.ts:10:5

10     read(_: Uint8Array): Promise<number | null> {
       ~~~~
error TS2322: Type '(buf: Uint8Array) => Promise<number | null>' is not assignable to type '(p: Uint8Array) => Promise<number | unique symbol>'.  Type 'Promise<number | null>' is not assignable to type 'Promise<number | unique symbol>'.

► https://deno.land/std@0.51.0/http/_io.ts:35:12

35   return { read };
              ~~~~
error TS2322: Type '(buf: Uint8Array) => Promise<number | null>' is not assignable to type '(p: Uint8Array) => Promise<number | unique symbol>'.  Type 'Promise<number | null>' is not assignable to type 'Promise<number | unique symbol>'.
► https://deno.land/std@0.51.0/http/_io.ts:113:12
113   return { read };
               ~~~~
error TS2339: Property 'iter' does not exist on type 'typeof Deno'.

► https://deno.land/std@0.51.0/http/_io.ts:167:34

167   for await (const chunk of Deno.iter(r)) {
                                     ~~~~

error TS2345: Argument of type 'Reader' is not assignable to parameter of type 'Writer'.
  Property 'write' is missing in type 'Reader' but required in type 'Writer'.
► https://deno.land/std@0.51.0/http/_io.ts:265:31
265     const n = await Deno.copy(r.body, writer);
                                  ~~~~~~
  'write' is declared here.

    ► $asset$/lib.deno.ns.d.ts:463:5

    463     write(p: Uint8Array): Promise<number>;
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error TS2339: Property 'listenTls' does not exist on type 'typeof Deno'.

► https://deno.land/std@0.51.0/http/server.ts:16:17
16 const { listen, listenTls } = Deno;
                   ~~~~~~~~~
error TS2694: Namespace 'Deno' has no exported member 'ListenTlsOptions'.
► https://deno.land/std@0.51.0/http/server.ts:289:38
289 export type HTTPSOptions = Omit<Deno.ListenTlsOptions, "transport">;
                                         ~~~~~~~~~~~~~~~~
error TS2694: Namespace 'Deno' has no exported member 'ListenTlsOptions'.
► https://deno.land/std@0.51.0/http/server.ts:309:26

309   const tlsOptions: Deno.ListenTlsOptions = {
                             ~~~~~~~~~~~~~~~~
error TS2694: Namespace 'Deno' has no exported member 'WriterSync'.
► https://deno.land/std@0.51.0/io/bufio.ts:8:24
8 type WriterSync = Deno.WriterSync;
                         ~~~~~~~~~~
error TS2469: The '>=' operator cannot be applied to type 'symbol'.

► https://deno.land/std@0.51.0/io/bufio.ts:90:14

90       assert(rr >= 0, "negative read");
                ~~
error TS2365: Operator '+=' cannot be applied to types 'number' and 'number | unique symbol'.
► https://deno.land/std@0.51.0/io/bufio.ts:91:7

91       this.w += rr;
         ~~~~~~~~~~~~
error TS2469: The '>' operator cannot be applied to type 'symbol'.
► https://deno.land/std@0.51.0/io/bufio.ts:92:11

92      if (rr > 0) {
             ~~
error TS2416: Property 'read' in type 'BufReader' is not assignable to the same property in base type 'Reader'.
  Type '(p: Uint8Array) => Promise<number | null>' is not assignable to type '(p: Uint8Array) => Promise<number | unique symbol>'.
    Type 'Promise<number | null>' is not assignable to type 'Promise<number | unique symbol>'.
      Type 'number | null' is not assignable to type 'number | unique symbol'.
        Type 'null' is not assignable to type 'number | unique symbol'.
► https://deno.land/std@0.51.0/io/bufio.ts:123:9

123   async read(p: Uint8Array): Promise<number | null> {
            ~~~~
error TS2469: The '>=' operator cannot be applied to type 'symbol'.
► https://deno.land/std@0.51.0/io/bufio.ts:133:16
133         assert(nread >= 0, "negative read");
                   ~~~~~
error TS2322: Type 'number | unique symbol' is not assignable to type 'number | null'.
  Type 'unique symbol' is not assignable to type 'number | null'.
► https://deno.land/std@0.51.0/io/bufio.ts:138:9
138         return rr;
            ~~~~~~~~~~
error TS2322: Type 'number | unique symbol' is not assignable to type 'number | null'.
  Type 'unique symbol' is not assignable to type 'number | null'.
► https://deno.land/std@0.51.0/io/bufio.ts:145:7
145       rr = await this.rd.read(this.buf);
          ~~
error TS2367: This condition will always return 'false' since the types 'OperatingSystem' and '"windows"' have no overlap.
► https://deno.land/std@0.51.0/path/_constants.ts:51:19

51 const isWindows = build.os == "windows";
                     ~~~~~~~~~~~~~~~~~~~~~
error TS2367: This condition will always return 'false' since the types 'OperatingSystem' and '"windows"' have no overlap.
► https://deno.land/std@0.51.0/path/_globrex.ts:5:15
5 const isWin = Deno.build.os === "windows";
                ~~~~~~~~~~~~~~~~~~~~~~~~~~~
error TS2367: This condition will always return 'false' since the types 'OperatingSystem' and '"windows"' have no overlap.
► https://deno.land/std@0.51.0/path/mod.ts:7:19
7 const isWindows = Deno.build.os == "windows";
                    ~~~~~~~~~~~~~~~~~~~~~~~~~~
error TS2345: Argument of type 'string | URL' is not assignable to parameter of type 'string'.
  Type 'URL' is not assignable to type 'string'.
► https://deno.land/std@0.51.0/path/posix.ts:433:18

433   return new URL(url).pathname;
                     ~~~
error TS2367: This condition will always return 'false' since the types 'OperatingSystem' and '"windows"' have no overlap.
► https://deno.land/std@0.51.0/path/separator.ts:2:19

2 const isWindows = Deno.build.os == "windows";
                    ~~~~~~~~~~~~~~~~~~~~~~~~~~
error TS2339: Property 'get' does not exist on type '{ (): { [index: string]: string; }; (key: string): string | undefined; }'.
► https://deno.land/std@0.51.0/path/win32.ts:42:18

42       path = env.get(`=${resolvedDevice}`) || cwd();
                    ~~~
error TS2345: Argument of type 'string | URL' is not assignable to parameter of type 'string'.
  Type 'URL' is not assignable to type 'string'.
► https://deno.land/std@0.51.0/path/win32.ts:911:18

911   return new URL(url).pathname
                     ~~~
error TS2304: Cannot find name 'AbortSignal'.
► https://deno.land/x/oak/application.ts:18:12

18   signal?: AbortSignal;
              ~~~~~~~~~~~
error TS2304: Cannot find name 'AbortSignal'.
► https://deno.land/x/oak/application.ts:27:12
27   signal?: AbortSignal;
              ~~~~~~~~~~~
error TS2304: Cannot find name 'ErrorEventInit'.

► https://deno.land/x/oak/application.ts:45:11

45   extends ErrorEventInit {
             ~~~~~~~~~~~~~~
error TS2304: Cannot find name 'ErrorEvent'.

► https://deno.land/x/oak/application.ts:78:61
78 export class ApplicationErrorEvent<S extends State> extends ErrorEvent {
                                                               ~~~~~~~~~~
error TS2345: Argument of type '{ context: Context<S>; message: any; error: any; }' is not assignable to parameter of type 'ApplicationErrorEventInit<S>'.
  Object literal may only specify known properties, and 'message' does not exist in type 'ApplicationErrorEventInit<S>'.

► https://deno.land/x/oak/application.ts:153:53

153       new ApplicationErrorEvent("error", { context, message, error }),
                                                        ~~~~~~~

error TS2416: Property 'addEventListener' in type 'Application<S>' is not assignable to the same property in base type 'EventTarget'.
  Type '(type: "error", listener: ApplicationErrorEventListener<S> | ApplicationErrorEventListenerObject<S> | null, options?: any) => void' is not assignable to type '(type: string, callback: EventListener | EventListenerObject | null, options?: boolean | AddEventListenerOptions | undefined) => void'.
    Types of parameters 'listener' and 'callback' are incompatible.
      Type 'EventListener | EventListenerObject | null' is not assignable to type 'ApplicationErrorEventListener<S> | ApplicationErrorEventListenerObject<S> | null'.
        Type 'EventListener' is not assignable to type 'ApplicationErrorEventListener<S> | ApplicationErrorEventListenerObject<S> | null'.      
          Type 'EventListener' is not assignable to type 'ApplicationErrorEventListener<S>'.
            Types of parameters 'evt' and 'evt' are incompatible.
              Type 'ApplicationErrorEvent<S>' is missing the following properties from type 'Event': type, target, currentTarget, composedPath, 
and 17 more.
► https://deno.land/x/oak/application.ts:202:3

202   addEventListener(
      ~~~~~~~~~~~~~~~~
error TS2304: Cannot find name 'AddEventListenerOptions'.

► https://deno.land/x/oak/application.ts:205:25

205     options?: boolean | AddEventListenerOptions,
                            ~~~~~~~~~~~~~~~~~~~~~~~
error TS2416: Property 'addEventListener' in type 'Application<S>' is not assignable to the same property in base type 'EventTarget'.
  Type '(type: "error", listener: ApplicationErrorEventListener<S> | ApplicationErrorEventListenerObject<S> | null, options?: any) => void' is not assignable to type '(type: string, callback: EventListener | EventListenerObject | null, options?: boolean | AddEventListenerOptions | undefined) => void'.

► https://deno.land/x/oak/application.ts:207:3
207   addEventListener(
      ~~~~~~~~~~~~~~~~
error TS2304: Cannot find name 'EventListenerOrEventListenerObject'.
► https://deno.land/x/oak/application.ts:209:15

209     listener: EventListenerOrEventListenerObject | null,
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error TS2304: Cannot find name 'AddEventListenerOptions'.

► https://deno.land/x/oak/application.ts:210:25

210     options?: boolean | AddEventListenerOptions,
                            ~~~~~~~~~~~~~~~~~~~~~~~

error TS2345: Argument of type '{ message: string; error: any; }' is not assignable to parameter of type 'ApplicationErrorEventInit<Record<string | number | symbol, any>>'.
  Object literal may only specify known properties, and 'message' does not exist in type 'ApplicationErrorEventInit<Record<string | number | symbol, any>>'.

► https://deno.land/x/oak/application.ts:254:46

254         new ApplicationErrorEvent("error", { message, error }),
                                                 ~~~~~~~
error TS2322: Type '() => boolean' is not assignable to type 'boolean'.
► https://deno.land/x/oak/send.ts:62:12
62     return (await Deno.stat(path)).isFile;
              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Did you mean to call this expression?
    ► https://deno.land/x/oak/send.ts:62:12
    62     return (await Deno.stat(path)).isFile;
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error TS2774: This condition will always return true since the function is always defined. Did you mean to call it instead?

► https://deno.land/x/oak/send.ts:135:9

135     if (stats.isDirectory) {
            ~~~~~~~~~~~~~~~~~

error TS2339: Property 'mtime' does not exist on type 'FileInfo'.

► https://deno.land/x/oak/send.ts:151:55

151   if (!response.headers.has("Last-Modified") && stats.mtime) {
                                                          ~~~~~
error TS2339: Property 'mtime' does not exist on type 'FileInfo'.

► https://deno.land/x/oak/send.ts:152:49

152     response.headers.set("Last-Modified", stats.mtime.toUTCString());
                                                    ~~~~~
Found 38 errors.

[gjuoun]

1. Make sure you have the newest Deno runtime (v1.0.0)
2. Open PowerShell, type deno run --allow-net --reload <your_app>.ts