What does upstream option mean ?

Bbernardo.abreu What does upstream option mean ?

H

The

host

host

option in your

wrangler

wrangler

config: https://developers.cloudflare.com/workers/wrangler/configuration/#local-development-settings

Cloudflare Docs

Configuration - Wrangler · Cloudflare Workers docs

Use a

wrangler.toml

wrangler.toml

configuration file to customize the development and deployment setup for your Worker project and other Developer Platform …

JJames Can you reproduce with a fresh worker created via `npm create cloudflare@latest`...

J

johtso•3/31/24, 5:51 PM

in the end reopening iterm sorted it out. still seems strange for it to silently fail with no output. I guess maybe an issue with a wrangler process still running? or maybe something to do with deleting the

.wrangler

.wrangler

directory in the project and the environment still thinking it should be there?

J

johtso•3/31/24, 5:51 PM

"have you tried turning it off and on again?"

J

johtso•3/31/24, 6:15 PM

@James I spoke too soon, it's doing the same thing again..

J

johtso•3/31/24, 6:16 PM

same issue happens in a fresh worker created with create-cloudflare

J

johtso•3/31/24, 6:16 PM

so seems to be wrangler getting into some kind of bad state

J

johtso•3/31/24, 6:19 PM

seems to be kind of non deterministic.. sometimes it works if I quit iterm and run

wrangler dev

wrangler dev

again.. sometimes it just continues to return after a small delay with no output

J

johtso•3/31/24, 6:29 PM

J

johtso•3/31/24, 6:29 PM

dev server runs successfully. I press x to close it. I try to run it again.. no output

J

johtso•3/31/24, 6:41 PM

upgrading from node 18 to 21 and reinstalling wrangler seems to have sorted it for now..

D

dog1283•3/31/24, 8:12 PM

Hello all. Just posted this in workers help in case anyone has a view: workers-and-pages-helpCustom Routes - Best Practice for Workers as Microservices

N

NazCodeland•3/31/24, 9:01 PM

I don't think I remember

wrangler tail

wrangler tail

working for remote urls, but it does now and its amazing. Out of curiousity, is it able to tail deployed Workers because those Workers are deployed on Cloudflare networks and therefore, Cloudflare knows when their code is executing?

NNazCodeland I don't think I remember `wrangler tail` working for remote urls, but it does no...

H

Hello, I’m Allie!•3/31/24, 9:07 PM

Do you mean

wrangler tail

wrangler tail

?

N

NazCodeland•3/31/24, 9:07 PM

oops, yeah I mean

wrangler tail

wrangler tail

NNazCodeland I don't think I remember `wrangler tail` working for remote urls, but it does no...

I

Isaac McFadyen•3/31/24, 10:02 PM

Yes. Cloudflare has a logging pipeline set up for all deployed Workers, so they can give you the logs live via

wrangler tail

wrangler tail

.

I

Isaac McFadyen•3/31/24, 10:02 PM

You can also pipe them to an external destination via Workers Logpush (on a Workers paid plan).

I

Isaac McFadyen•3/31/24, 10:02 PM

https://developers.cloudflare.com/workers/observability/logging/logpush/

N

NazCodeland•3/31/24, 10:06 PM

for all deployed workers, that's very cool

B

bernardo.abreuOP•4/1/24, 1:40 PM

Hi All, has anyone been through this before ?

Bbernardo.abreu Hi All, has anyone been through this before ?

I

Isaac McFadyen•4/1/24, 1:45 PM

It looks like you're trying to run the JS file directly with Node? If so you'll need to use Wrangler.

I

Isaac McFadyen•4/1/24, 1:45 PM

Or is this something else?

IIsaac McFadyen It looks like you're trying to run the JS file directly with Node? If so you'll ...

B

bernardo.abreuOP•4/1/24, 1:47 PM

this is my

.vscode/launch.json

.vscode/launch.json

:

{
    "configurations": [
        {
            "name": "hybrid-routing",
            "type": "node",
            "request": "launch",
            "sourceMaps": true,
            "skipFiles": ["<node_internals>/**"],
            "program": "${workspaceFolder}/index.ts",
            "outFiles": [
                "${workspaceFolder}/out/**/*.js"
            ],
            "preLaunchTask": "tsc: build - tsconfig.json",
        }
    ]
}

{
    "configurations": [
        {
            "name": "hybrid-routing",
            "type": "node",
            "request": "launch",
            "sourceMaps": true,
            "skipFiles": ["<node_internals>/**"],
            "program": "${workspaceFolder}/index.ts",
            "outFiles": [
                "${workspaceFolder}/out/**/*.js"
            ],
            "preLaunchTask": "tsc: build - tsconfig.json",
        }
    ]
}

{
    "configurations": [
        {
            "name": "hybrid-routing",
            "type": "node",
            "request": "launch",
            "sourceMaps": true,
            "skipFiles": ["<node_internals>/**"],
            "program": "${workspaceFolder}/index.ts",
            "outFiles": [
                "${workspaceFolder}/out/**/*.js"
            ],
            "preLaunchTask": "tsc: build - tsconfig.json",
        }
    ]
}

{
    "configurations": [
        {
            "name": "hybrid-routing",
            "type": "node",
            "request": "launch",
            "sourceMaps": true,
            "skipFiles": ["<node_internals>/**"],
            "program": "${workspaceFolder}/index.ts",
            "outFiles": [
                "${workspaceFolder}/out/**/*.js"
            ],
            "preLaunchTask": "tsc: build - tsconfig.json",
        }
    ]
}

B

bernardo.abreuOP•4/1/24, 1:48 PM

My

tsconfig

tsconfig

{
  "compilerOptions": {
    "types": [
      "@cloudflare/workers-types",
      "vitest-environment-miniflare/globals",
    ],
    "target": "ES2020",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "lib": ["ES2020"],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
    "module": "NodeNext",                                /* Specify what module code is generated. */
    "rootDir": "./",                                  /* Specify the root folder within your source files. */
    "moduleResolution": "nodenext",                     /* Specify how TypeScript looks up a file from a given module specifier. */
    "baseUrl": "./",                                   /* Specify the base directory to resolve non-relative module names. */
    "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
    "outDir": "./out",                                   /* Specify an output folder for all emitted files. */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  }
}

{
  "compilerOptions": {
    "types": [
      "@cloudflare/workers-types",
      "vitest-environment-miniflare/globals",
    ],
    "target": "ES2020",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "lib": ["ES2020"],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
    "module": "NodeNext",                                /* Specify what module code is generated. */
    "rootDir": "./",                                  /* Specify the root folder within your source files. */
    "moduleResolution": "nodenext",                     /* Specify how TypeScript looks up a file from a given module specifier. */
    "baseUrl": "./",                                   /* Specify the base directory to resolve non-relative module names. */
    "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
    "outDir": "./out",                                   /* Specify an output folder for all emitted files. */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  }
}

{
  "compilerOptions": {
    "types": [
      "@cloudflare/workers-types",
      "vitest-environment-miniflare/globals",
    ],
    "target": "ES2020",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "lib": ["ES2020"],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
    "module": "NodeNext",                                /* Specify what module code is generated. */
    "rootDir": "./",                                  /* Specify the root folder within your source files. */
    "moduleResolution": "nodenext",                     /* Specify how TypeScript looks up a file from a given module specifier. */
    "baseUrl": "./",                                   /* Specify the base directory to resolve non-relative module names. */
    "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
    "outDir": "./out",                                   /* Specify an output folder for all emitted files. */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  }
}

{
  "compilerOptions": {
    "types": [
      "@cloudflare/workers-types",
      "vitest-environment-miniflare/globals",
    ],
    "target": "ES2020",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "lib": ["ES2020"],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
    "module": "NodeNext",                                /* Specify what module code is generated. */
    "rootDir": "./",                                  /* Specify the root folder within your source files. */
    "moduleResolution": "nodenext",                     /* Specify how TypeScript looks up a file from a given module specifier. */
    "baseUrl": "./",                                   /* Specify the base directory to resolve non-relative module names. */
    "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
    "outDir": "./out",                                   /* Specify an output folder for all emitted files. */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  }
}

B

bernardo.abreuOP•4/1/24, 1:48 PM

And my

package.json

package.json

{
    "name": "cxp-uwp2-int",
    "type": "module",
    "private": true,
    "version": "1.0.0",
    "description": "package for creating workers templates",
    "main": "./index.ts",
    "scripts": {
        "test": "vitest --watch",
        "start": "wrangler dev --local --port 3012 --env local",
        "wrangler:tail": "wrangler tail",
        "format": "prettier --write '**/*.{js,css,json,md}'",
        "compile": "tsc"
    },
    "author": "{{ authors }}",
    "license": "ISC",
    "devDependencies": {
        "@cloudflare/workers-types": "^4.20230404.0",
        "@types/jest": "^29.5.0",
        "@vitest/ui": "^0.29.8",
        "msw": "^1.2.1",
        "prettier": "^2.8.7",
        "vite": "^4.5.2",
        "vitest": "^0.29.8",
        "vitest-environment-miniflare": "^2.13.0"
    },
    "dependencies": {
        "itty-router": "^3.0.12",
        "serverless-cloudflare-workers": "^1.2.0",
        "typescript": "^5.0.3",
        "wrangler": "^2.20.2"
    }
}

{
    "name": "cxp-uwp2-int",
    "type": "module",
    "private": true,
    "version": "1.0.0",
    "description": "package for creating workers templates",
    "main": "./index.ts",
    "scripts": {
        "test": "vitest --watch",
        "start": "wrangler dev --local --port 3012 --env local",
        "wrangler:tail": "wrangler tail",
        "format": "prettier --write '**/*.{js,css,json,md}'",
        "compile": "tsc"
    },
    "author": "{{ authors }}",
    "license": "ISC",
    "devDependencies": {
        "@cloudflare/workers-types": "^4.20230404.0",
        "@types/jest": "^29.5.0",
        "@vitest/ui": "^0.29.8",
        "msw": "^1.2.1",
        "prettier": "^2.8.7",
        "vite": "^4.5.2",
        "vitest": "^0.29.8",
        "vitest-environment-miniflare": "^2.13.0"
    },
    "dependencies": {
        "itty-router": "^3.0.12",
        "serverless-cloudflare-workers": "^1.2.0",
        "typescript": "^5.0.3",
        "wrangler": "^2.20.2"
    }
}

{
    "name": "cxp-uwp2-int",
    "type": "module",
    "private": true,
    "version": "1.0.0",
    "description": "package for creating workers templates",
    "main": "./index.ts",
    "scripts": {
        "test": "vitest --watch",
        "start": "wrangler dev --local --port 3012 --env local",
        "wrangler:tail": "wrangler tail",
        "format": "prettier --write '**/*.{js,css,json,md}'",
        "compile": "tsc"
    },
    "author": "{{ authors }}",
    "license": "ISC",
    "devDependencies": {
        "@cloudflare/workers-types": "^4.20230404.0",
        "@types/jest": "^29.5.0",
        "@vitest/ui": "^0.29.8",
        "msw": "^1.2.1",
        "prettier": "^2.8.7",
        "vite": "^4.5.2",
        "vitest": "^0.29.8",
        "vitest-environment-miniflare": "^2.13.0"
    },
    "dependencies": {
        "itty-router": "^3.0.12",
        "serverless-cloudflare-workers": "^1.2.0",
        "typescript": "^5.0.3",
        "wrangler": "^2.20.2"
    }
}

{
    "name": "cxp-uwp2-int",
    "type": "module",
    "private": true,
    "version": "1.0.0",
    "description": "package for creating workers templates",
    "main": "./index.ts",
    "scripts": {
        "test": "vitest --watch",
        "start": "wrangler dev --local --port 3012 --env local",
        "wrangler:tail": "wrangler tail",
        "format": "prettier --write '**/*.{js,css,json,md}'",
        "compile": "tsc"
    },
    "author": "{{ authors }}",
    "license": "ISC",
    "devDependencies": {
        "@cloudflare/workers-types": "^4.20230404.0",
        "@types/jest": "^29.5.0",
        "@vitest/ui": "^0.29.8",
        "msw": "^1.2.1",
        "prettier": "^2.8.7",
        "vite": "^4.5.2",
        "vitest": "^0.29.8",
        "vitest-environment-miniflare": "^2.13.0"
    },
    "dependencies": {
        "itty-router": "^3.0.12",
        "serverless-cloudflare-workers": "^1.2.0",
        "typescript": "^5.0.3",
        "wrangler": "^2.20.2"
    }
}

Bbernardo.abreu this is my `.vscode/launch.json` : ```json { "configurations": [ { ...

I

Isaac McFadyen•4/1/24, 1:48 PM

So you're trying to run the Javascript file from

tsc

tsc

directly.

I

Isaac McFadyen•4/1/24, 1:48 PM

That won't work.

I

Isaac McFadyen•4/1/24, 1:48 PM

You'll need to run

wrangler dev

wrangler dev

in order to run the JS file.

I

Isaac McFadyen•4/1/24, 1:49 PM

(see your

start

start

script)

B

bernardo.abreuOP•4/1/24, 1:49 PM

I'm able to run the project, but when it comes to using the debugger from vscode it won't work

B

bernardo.abreuOP•4/1/24, 1:49 PM

Running in debug mode is my goal

I

Isaac McFadyen•4/1/24, 1:51 PM

You also cross-posted this in #workerd, please don't do that in the future as I completely missed kian's responses/questions.

IIsaac McFadyen You also cross-posted this in #workerd, please don't do that in the future as I ...

B

bernardo.abreuOP•4/1/24, 1:52 PM

Yeah, sorry, just deleted my post there. Figure this would be a better channel.

IIsaac McFadyen You'll need to run `wrangler dev` in order to run the JS file.

B

bernardo.abreuOP•4/1/24, 1:54 PM

What do you mean here ?

Bbernardo.abreu What do you mean here ?

I

Isaac McFadyen•4/1/24, 1:55 PM

tsc

tsc

outputs a Javascript file. But you can't run that Javascript file directly with Node.js, it's not compatible.

I

Isaac McFadyen•4/1/24, 1:55 PM

You need to run Wrangler, which will then run the JS file for you.

IIsaac McFadyen `tsc` outputs a Javascript file. But you can't run that Javascript file directly...

B

bernardo.abreuOP•4/1/24, 1:56 PM

Where are you seeing this ? I am running with wrangler (package.json)

Bbernardo.abreu Where are you seeing this ? I am running with wrangler (package.json)

I

Isaac McFadyen•4/1/24, 1:58 PM

I'm seeing in the Debug Console the line

<path>/bin/node ./out/index.js

<path>/bin/node ./out/index.js

which makes it seem like you're running it directly with Node.

I

Isaac McFadyen•4/1/24, 1:58 PM

I'm assuming the launch.json isn't properly configured?

I

Isaac McFadyen•4/1/24, 1:59 PM

That's the error you'd see if it was run directly with Node instead of Wrangler.

IIsaac McFadyen I'm assuming the launch.json isn't properly configured?

B

bernardo.abreuOP•4/1/24, 1:59 PM

Yes, my intention is to set it up the right way, but I don't know how.

Bbernardo.abreu Yes, my intention is to set it up the right way, but I don't know how.

I

Isaac McFadyen•4/1/24, 2:00 PM

I don't have much experience with VSCode's launch.json either unfortunately, so I might not be able to help much here.

B

bernardo.abreuOP•4/1/24, 2:00 PM

No a problem, thanks though

B

bernardo.abreuOP•4/1/24, 2:17 PM

Has anyone else had to configure VSCode to run in debug mode for a TS Node project that includes a Cloudflare Worker?

G

Grant Burry•4/1/24, 2:58 PM

Maybe I'm getting a little ahead of myself, but I'm poking around some experimental types and trying to make this new RPC thing work. Just spent the weekend trying to build a Durable Object Proxy thingy, so this is great timing

. Looking forward to an announcement

https://github.com/cloudflare/workerd/blob/f04e5ce5a25df2f394dc420e330946ea3ea8e67e/types/test/types/rpc.ts

Screenshot_2024-04-01_at_10.58.01_AM.png

GitHub

workerd/types/test/types/rpc.ts at f04e5ce5a25df2f394dc420e330946ea...

The JavaScript / Wasm runtime that powers Cloudflare Workers - cloudflare/workerd

S

shaderkyle_ | SolSentryBot•4/1/24, 8:27 PM

Is there anyway to "hotfix" an environment variable's value after deployment? If so, what are the implications of pushing a change?

S

shaderkyle_ | SolSentryBot•4/1/24, 8:27 PM

Use case: authentication key for a 3rd party app changes, you don't want to have to redeploy

Sshaderkyle_ | SolSentryBot Is there anyway to "hotfix" an environment variable's value after deployment? I...

I

Isaac McFadyen•4/1/24, 8:35 PM

You can definitely patch an environment variable. Internally the Worker will be redeployed but I believe it can be done via the API without a full reupload.

IIsaac McFadyen You can definitely patch an environment variable. Internally the Worker will be ...

K

kp1197•4/1/24, 8:38 PM

Will it reload any durable objects? Any docs? Had trouble finding readings on this

K

kp1197•4/1/24, 8:39 PM

Workers im not worried about. Durable.objs getting forcefully evicted is an issue

K

kp1197•4/1/24, 8:40 PM

Also, unrelated, but in v3.18+ miniflare debugging is broken for codebases over 1mb (about 10k lines)

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