Uncaught TypeError in Getting Started guide

Hello Aleph.js team 👋. I was recently updating my blog post about Aleph and found that I was getting an error when following along with the current Getting Started guide. All three aleph commands, dev, start, and build result in the same error.

Commands entered:

deno install --unstable -A -f -n aleph https://deno.land/x/aleph@v0.2.28/cli.ts
export PATH="/Users/ajcwebdev/.deno/bin:$PATH"
aleph init hello
cd hello
aleph dev

Error output:

Check https://deno.land/x/aleph@v0.2.28/cli/dev.ts

error: Uncaught (in promise) TypeError: TS2345 [ERROR]: Argument of type 'TransformerFactory<SourceFile>' is not assignable to parameter of type 'TransformerFactory<SourceFile> | CustomTransformerFactory'.
  Type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").TransformerFactory<import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").SourceFile>' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").TransformerFactory<import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").SourceFile>'.
    Types of parameters 'context' and 'context' are incompatible.
      Type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").TransformationContext' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").TransformationContext'.
        The types of 'factory.createTypeParameterDeclaration(...).parent' are incompatible between these types.
          Type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").DeclarationWithTypeParameterChildren | import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").InferTypeNode' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").DeclarationWithTypeParameterChildren | import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").InferTypeNode'.
            Type 'JSDocTemplateTag' is not assignable to type 'DeclarationWithTypeParameterChildren | InferTypeNode'.
              Type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").JSDocTemplateTag' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").JSDocTemplateTag'.
                Types of property 'parent' are incompatible.
                  Type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").JSDoc | import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").JSDocTypeLiteral' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").JSDoc | import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").JSDocTypeLiteral'.
                    Type 'JSDoc' is not assignable to type 'JSDoc | JSDocTypeLiteral'.
                      Type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").JSDoc' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").JSDoc'.
                        Types of property 'parent' are incompatible.
                          Type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").HasJSDoc' is not assignable to type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").HasJSDoc'.
                            Type 'ImportEqualsDeclaration' is not assignable to type 'HasJSDoc'.
                              Property 'isTypeOnly' is missing in type 'import("https://cdn.esm.sh/v41/typescript@4.1.2/lib/typescript.d.ts").ImportEqualsDeclaration' but required in type 'import("https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts").ImportEqualsDeclaration'.
    if (reactRefresh) transformers.before!.push(reactRefreshTS())
                                                ~~~~~~~~~~~~~~~~
    at https://deno.land/x/aleph@v0.2.28/tsc/compile.ts:28:49

    'isTypeOnly' is declared here.
            readonly isTypeOnly: boolean;
                     ~~~~~~~~~~
        at https://cdn.esm.sh/v41/typescript@4.2.4/lib/typescript.d.ts:1601:18
    const { default: cmd } = await import(`./cli/${command}.ts`)
                             ^
    at async main (https://deno.land/x/aleph@v0.2.28/cli.ts:163:30)

Aleph version

aleph.js v0.2.28

Deno version

deno 1.8.0

deno info

DENO_DIR location: "/Users/ajcwebdev/Library/Caches/deno"
Remote modules cache: "/Users/ajcwebdev/Library/Caches/deno/deps"
TypeScript compiler cache: "/Users/ajcwebdev/Library/Caches/deno/gen"

My system info

System Version: macOS 11.3 (20E232)
Kernel Version: Darwin 20.4.0
Boot Volume: Macintosh HD

Hopefully that’s helpful, let me know if you need other system info or anything like that.

[shadowtime2000]

Documentation is way behind on things

@thesabbir I would like to point out that the doc is purposely not updated with alpha stuff, well, because its alpha and super unstable compared to 0.2.28.

@scally Awesome!

[ajcwebdev]

Cool, thanks for the info @shadowtime2000! 👍

Haven’t tried it yet but it looks like there is in fact a dvm.