yaak-mountain-loop/plugins/auth-basic/src/index.ts

import type { PluginDefinition } from '@yaakapp/api';

export const plugin: PluginDefinition = {
  authentication: {
    name: 'basic',
    label: 'Basic Auth',
    shortLabel: 'Basic',
    args: [
      {
        type: 'text',
        name: 'username',
        label: 'Username',
        optional: true,
      },
      {
        type: 'text',
        name: 'password',
        label: 'Password',
        optional: true,
        password: true,
      },
    ],
    async onApply(_ctx, { values }) {
      const { username, password } = values;
      const value = `Basic ${Buffer.from(`${username}:${password}`).toString('base64')}`;
      return { setHeaders: [{ name: 'Authorization', value }] };
    },
  },
};