@backstage/backend-plugin-api/dist/wiring/createBackendPlugin.cjs.js

Core API used by Backstage backend plugins

'use strict';

var constants = require('./constants.cjs.js');

function createBackendPlugin(options) {
  if (!constants.ID_PATTERN.test(options.pluginId)) {
    console.warn(
      `WARNING: The pluginId '${options.pluginId}' will be invalid soon, please change it to match the pattern ${constants.ID_PATTERN} (letters, digits, and dashes only, starting with a letter)`
    );
  }
  if (!constants.ID_PATTERN_OLD.test(options.pluginId)) {
    throw new Error(
      `Invalid pluginId '${options.pluginId}', must match the pattern ${constants.ID_PATTERN} (letters, digits, and dashes only, starting with a letter)`
    );
  }
  function getRegistrations() {
    const extensionPoints = [];
    let init = void 0;
    options.register({
      registerExtensionPoint(extOrOpts, impl) {
        if (init) {
          throw new Error("registerExtensionPoint called after registerInit");
        }
        if (typeof extOrOpts === "object" && extOrOpts !== null && "extensionPoint" in extOrOpts) {
          extensionPoints.push({
            extensionPoint: extOrOpts.extensionPoint,
            factory: extOrOpts.factory
          });
        } else {
          extensionPoints.push({
            extensionPoint: extOrOpts,
            factory: () => impl
          });
        }
      },
      registerInit(regInit) {
        if (init) {
          throw new Error("registerInit must only be called once");
        }
        init = {
          deps: regInit.deps,
          func: regInit.init
        };
      }
    });
    if (!init) {
      throw new Error(
        `registerInit was not called by register in ${options.pluginId}`
      );
    }
    return [
      {
        type: "plugin-v1.1",
        pluginId: options.pluginId,
        extensionPoints,
        init
      }
    ];
  }
  return {
    $$type: "@backstage/BackendFeature",
    version: "v1",
    featureType: "registrations",
    getRegistrations
  };
}

exports.createBackendPlugin = createBackendPlugin;
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