node-api.ts

import { fromElectronVersion as napiVersionFromElectronVersion } from 'node-api-version';

export class NodeAPI {
  private moduleName: string;
  private electronVersion: string;

  constructor(moduleName: string, electronVersion: string) {
    this.moduleName = moduleName;
    this.electronVersion = electronVersion;
  }

  ensureElectronSupport(): void {
    this.getVersionForElectron();
  }

  getVersionForElectron(): number {
    const electronNapiVersion = napiVersionFromElectronVersion(this.electronVersion);

    if (!electronNapiVersion) {
      throw new Error(`Native module '${this.moduleName}' requires Node-API but Electron v${this.electronVersion} does not support Node-API`);
    }

    return electronNapiVersion;
  }

  getNapiVersion(moduleNapiVersions: number[]): number {
    const electronNapiVersion = this.getVersionForElectron();

    // Filter out Node-API versions that are too high
    const filteredVersions = moduleNapiVersions.filter((v) => (v <= electronNapiVersion));

    if (filteredVersions.length === 0) {
      throw new Error(`Native module '${this.moduleName}' supports Node-API versions ${moduleNapiVersions} but Electron v${this.electronVersion} only supports Node-API v${electronNapiVersion}`)
    }

    return Math.max(...filteredVersions);
  }
}