How to use the ember-cli-string-utils.classify function in ember-cli-string-utils

afterInstall: function (options: any) {
    const appConfig = getAppFromConfig(this.options.app);
    if (options.prefix && appConfig.prefix && appConfig.prefix !== options.prefix) {
      console.log(chalk.yellow(oneLine`You are using different prefix from app,
       you might get lint errors. Please update "tslint.json" accordingly.`));
    }

    const returns: Array = [];
    const className = stringUtils.classify(`${options.entity.name}Directive`);
    const fileName = stringUtils.dasherize(`${options.entity.name}.directive`);
    const fullGeneratePath = path.join(this.project.root, this.generatePath);
    const moduleDir = path.parse(this.pathToModule).dir;
    const relativeDir = path.relative(moduleDir, fullGeneratePath);
    const normalizeRelativeDir = relativeDir.startsWith('.') ? relativeDir : `./${relativeDir}`;
    const importPath = relativeDir ? `${normalizeRelativeDir}/${fileName}` : `./${fileName}`;

    if (!options.skipImport) {
      if (options.dryRun) {
        this._writeStatusToUI(chalk.yellow,
          'update',
          path.relative(this.project.root, this.pathToModule));
        return;
      }
      returns.push(
        astUtils.addDeclarationToModule(this.pathToModule, className, importPath)

let commandMap = commandFiles.reduce((acc: any, curr: string) => {
      let classifiedName = stringUtils.classify(curr);
      let defaultImport = require(`./${curr}`).default;

      acc[classifiedName] = defaultImport;

      return acc;
    }, {});

const commandMap = commandFiles.reduce((acc: any, curr: string) => {
      let classifiedName = stringUtils.classify(curr);
      let defaultImport = require(`./${curr}`).default;

      acc[classifiedName] = defaultImport;

      return acc;
    }, {});

locals(options) {
    let entity = options.entity;
    let rawName = entity.name;
    let name = stringUtil.dasherize(rawName);
    let namespace = stringUtil.classify(rawName);

    return {
      name,
      modulePrefix: name,
      namespace,
      emberCLIVersion: require('../../package').version,
      yarn: options.yarn,
      welcome: options.welcome,
      blueprint: 'app',
    };
  },
};

locals(options) {
    let entity = options.entity;
    let rawName = entity.name;
    let name = stringUtil.dasherize(rawName);
    let namespace = stringUtil.classify(rawName);

    return {
      name,
      modulePrefix: name,
      namespace,
      emberCLIVersion: require('../../package').version,
      emberCanaryVersion,
      yarn: options.yarn,
      welcome: options.welcome,
    };
  },

locals(options) {
    let entity = options.entity;
    let rawName = entity.name;
    let name = stringUtil.dasherize(rawName);
    let namespace = stringUtil.classify(rawName);

    return {
      name,
      modulePrefix: name,
      namespace,
      yarn: options.yarn,
    };
  },

afterInstall: function(options) {
    if (options.dryRun) {
      return;
    }

    const returns = [];
    const className = stringUtils.classify(`${options.entity.name}Pipe`);
    const fileName = stringUtils.dasherize(`${options.entity.name}.pipe`);
    const fullGeneratePath = path.join(this.project.root, this.generatePath);
    const moduleDir = path.parse(this.pathToModule).dir;
    const relativeDir = path.relative(moduleDir, fullGeneratePath).toLowerCase();
    const importPath = relativeDir ? `./${relativeDir}/${fileName}` : `./${fileName}`;

    if (!options['skip-import']) {
      returns.push(
        astUtils.addDeclarationToModule(this.pathToModule, className, importPath)
          .then(change => change.apply(NodeHost)));
    }

    return Promise.all(returns);
  }
};

afterInstall: function(options) {
    if (options.dryRun) {
      return;
    }

    const returns = [];
    const className = stringUtils.classify(`${options.entity.name}Directive`);
    const fileName = stringUtils.dasherize(`${options.entity.name}.directive`);
    const fullGeneratePath = path.join(this.project.root, this.generatePath);
    const moduleDir = path.parse(this.pathToModule).dir;
    const relativeDir = path.relative(moduleDir, fullGeneratePath).toLowerCase();
    const importPath = relativeDir ? `./${relativeDir}/${fileName}` : `./${fileName}`;

    if (!options['skip-import']) {
      returns.push(
        astUtils.addDeclarationToModule(this.pathToModule, className, importPath)
          .then(change => change.apply(NodeHost)));
    }

    return Promise.all(returns);
  }
};

afterInstall: function(options: any) {
    const returns: Array = [];
    const className = stringUtils.classify(`${options.entity.name}Pipe`);
    const fileName = stringUtils.dasherize(`${options.entity.name}.pipe`);
    const fullGeneratePath = path.join(this.project.root, this.generatePath);
    const moduleDir = path.parse(this.pathToModule).dir;
    const relativeDir = path.relative(moduleDir, fullGeneratePath);
    const normalizeRelativeDir = relativeDir.startsWith('.') ? relativeDir : `./${relativeDir}`;
    const importPath = relativeDir ? `${normalizeRelativeDir}/${fileName}` : `./${fileName}`;

    if (!options.skipImport) {
      if (options.dryRun) {
        this._writeStatusToUI(chalk.yellow,
          'update',
          path.relative(this.project.root, this.pathToModule));
        return;
      }
      returns.push(
        astUtils.addDeclarationToModule(this.pathToModule, className, importPath)

afterInstall(options: any) {
    const returns: Array = [];

    if (!this.pathToModule) {
      const warningMessage = oneLine`
        Module is generated but not provided,
        it must be provided to be used
      `;
      this._writeStatusToUI(chalk.yellow, 'WARNING', warningMessage);
    } else {
      let className = stringUtils.classify(`${options.entity.name}Module`);
      let fileName = stringUtils.dasherize(`${options.entity.name}.module`);
      if (options.routing) {
        className = stringUtils.classify(`${options.entity.name}RoutingModule`);
        fileName = stringUtils.dasherize(`${options.entity.name}-routing.module`);
      }
      const fullGeneratePath = path.join(this.project.root, this.generatePath);
      const moduleDir = path.parse(this.pathToModule).dir;
      const relativeDir = path.relative(moduleDir, fullGeneratePath);
      const importPath = relativeDir ? `./${relativeDir}/${fileName}` : `./${fileName}`;
      returns.push(
        astUtils.addImportToModule(this.pathToModule, className, importPath)
          .then((change: any) => change.apply(NodeHost)));
      this._writeStatusToUI(chalk.yellow,
                            'update',
                            path.relative(this.project.root, this.pathToModule));
    }