Category Archives for computers


I got these errors after trying to run npm install.

# npm install

npm ERR! gyp ERR! stack TypeError: Cannot assign to read only property 'cflags' of object '#<Object>'
npm ERR! gyp ERR! stack     at createConfigFile (/app/node_modules/node-gyp/lib/configure.js:117:21)
npm ERR! gyp ERR! stack     at /app/node_modules/node-gyp/lib/configure.js:84:9
npm ERR! gyp ERR! stack     at FSReqCallback.oncomplete (node:fs:191:23)
npm ERR! gyp ERR! System Linux 6.6.12-linuxkit
npm ERR! gyp ERR! command "/usr/local/bin/node" "/app/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
npm ERR! gyp ERR! cwd /app/node_modules/node-sass
npm ERR! gyp ERR! node -v v20.11.1
npm ERR! gyp ERR! node-gyp -v v7.1.2
npm ERR! gyp ERR! Node-gyp failed to build your package.
npm ERR! gyp ERR! Try to update npm and/or node-gyp and if it does not help file an issue with the package author.
npm ERR! Build failed with error code: 7

I did the following to fix these

  • installed system packages
  • updated node to the current version (not LTS)
  • update npm to the latest version
  • update node_gyp to the latest version
  • updated all versions in package.json to the latest versions
  • removed package-lock.json file
  • removed node_modules directory
  • cleaned npm cache
  • ran npm install again

I installed the following packages:

# apt-get update && apt-get install -y ca-certificates curl gnupg zip unzip git software-properties-common rsyslog

Upgraded node, npm, node_gyp and cleared cache

 # npm cache clean -f \
  && npm install -g n \
  && n current
# npm install -g npm@latest
# npm update -g node-gyp
# rm -rf node_modules package-lock.json

Then, update all package versions in package.json to their latest version.

And then tried again, this time it worked.

# npm install

Did this work for you as well? Had to do less? More? Let me know and I’ll update this post.

Show your query with values in Laravel 10 Eloquent

When debugging your eloquent model queries, it’s often nice to know which SQL query is executed in the end.

By default, Laravel won’t show you the values used in the query. Instead, it shows you a questionmark ? instead of the actual values. This is because of the parameter bindings in PDO.

Let’s create a ->toSqlWithBindings() macro so you can have the full query.

Create the macro as ServiceProvider


// file app/Providers/MacroServiceProvder.php


namespace App\Providers;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
use Illuminate\Database\Query\Builder;
use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Str;

class MacroServiceProvider extends ServiceProvider
    public function boot(): void
        Builder::macro('toSqlWithBindings', function () {
            /** @var Builder $this */
            $bindings = array_map(
                fn ($parameter) => (is_string($parameter) || $parameter instanceof Carbon) ? "'{$parameter}'" : $parameter,
                /** @var Builder $this */

            return Str::replaceArray(

        /** @var Builder $this */
        EloquentBuilder::macro('toSqlWithBindings', fn () => $this->toBase()->toSqlWithBindings());

the serviceprovider file containing the macro which gives us the toSqlWithBindings() method on eloquent queries

Use it

Switching from Sanctum to JWT

I’ve been debugging for days to get my Ionic app working with the Laravel API backend.

The issue: logging in worked fine, but every subsequent API request failed with a 401.

The reason (I guess): the Ionic/capacitor app works with a referrer of capacitor://localhost. I think this messes up the cookie that is set to maintain the session.

So I had to switch over to something without cookies. Having already spend days on the issues, I went to work with JWT as I’ve done so before.

I followed this tutorial to get me a head-start:

Generate random values in Postman to use in your tests

When you want your tests to be able to run whenever you want, you should use values which are random.

In Postman, click on the name of Collection and then open the ‘Pre-request Script’ tab.

There, add the following:

// get a random number between a minimum and a maximum
// gives you current datetime with milliseconds like 2022810_171012_174
postman.setGlobalVariable("getCurrentDate",  () => {
  const date=new Date(); 
  return String(date.getFullYear())  
      + String(date.getMonth()+1) 
      + String(date.getDate()) 
      + '_' 
      + String(date.getHours() < 10 ? "0"+date.getHours() : date.getHours()) 
      + String(date.getMinutes() < 10 ? "0"+date.getMinutes() : date.getMinutes()) 
      + String(date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds())
      + '_' 
      + String(date.getMilliseconds())

You can now use this function in your tests. This enables you to make your strings (like emailaddresses) random by adding the current datetime to it.

To use it, open your test, click on the ‘Pre-request Script’ tab and add the following.

var currentDate = eval(pm.globals.get("getCurrentDate"))();
var randomEmail = `postman-${currentDate}`;
pm.environment.set("randomEmail", randomEmail);

You can now use the generated value in the body of your POST-request by referencing it as {{randomEmail}}

Autoprefixer: The color-adjust shorthand is currently deprecated

The full warning is:

(2728:3) autoprefixer: Replace color-adjust to print-color-adjust. The color-adjust shorthand is currently deprecated.

The easy fix:

rename color-adjust to print-color-adjust

This didn’t work for me as the issue is in the node_modules directory.

Other fix: add the following to your package.json:

  "resolutions": {
    "autoprefixer": "10.4.5"

Then run the following again: yarn install

Check if a variable is set in Selenium IDE and set it when it’s not declared yet

Sometimes you want to use child/parent like tests.

This enables you to treat the ‘child test’ more like a template which you can re-use. But you might want to influence the variable used in this templated test.

To test whether a variable was set and set it when it was not, you’d do the following.

Testing whether a variable was set is done with this javascript string:

"${randomResellerEmail}" == "$" + "{randomResellerEmail}"

In Selenium IDE this looks like the following.

Test for a variable and set it when it did not exist

Store current datetime in variable in Selenium IDE and use it for a random email address

I use variables all the time. And to be able to re-use a test over and over again, I need random email addresses whenever I fill in forms.

For this I define a variable with the current date and time and then a variable which will hold the email address which uses the current date and time.

My random email address will look like:

Just store the following as 1 string into the ‘Target’ part of your command.

const date=new Date(); return String(date.getFullYear())  + String(date.getMonth()+1) + String(date.getDate()) + '_' + String(date.getHours() < 10 ? "0"+date.getHours() : date.getHours()) + String(date.getMinutes() < 10 ? "0"+date.getMinutes() : date.getMinutes()) + String(date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds())

It will look like this in Selenium IDE:

storing the current datetime in a variable in Selenium IDE

Now you can use this to create your email address which is unique every time you run your test:

And use it when you want to fill a form.

Add bearer authentication to your Swagger endpoint

In your .json definition file:

  "swagger": "2.0".
  "securityDefinitions": {
    "bearerAuth": {
      "type": "apiKey",
      "in": "header",
      "name": "Authorization",
  "paths": {
    "get": {
      "/path": {
        "security": [
          {"bearerAuth": []}

official documentation is here:

Git remove local branches that don’t exist remote

The quick way:

git branch --merged master | grep -v '^[ *]*master$' | xargs git branch -d
git remote prune origin

Use the following to have the branches displayed before you’re asked to delete them.

branches=$(git branch --merged master | grep -v '^[ *]*master$'); \
printf '\n\nBranches to be removed:\n---\n'; \
echo ${branches} | xargs -n1; \
printf '---\n\nRemove the branches above? [Ny] ' \
    &&  read shouldDelete \
    && [[ "${shouldDelete}" =~ [yY] ]] \
      && echo $branches | xargs git branch -d \
      || echo 'aborted' 


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