balena-cli/lib/actions/help_ts.ts
Paulo Castro 3387f8f656 Fix 'npm help' SyntaxError on Node 8 (invalid 's' regex flag)
Change-type: patch
Signed-off-by: Paulo Castro <paulo@balena.io>
2019-06-05 16:12:16 +01:00

38 lines
1.3 KiB
TypeScript

/**
* @license
* Copyright 2019 Balena Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { Command } from '@oclif/command';
import * as _ from 'lodash';
import EnvAddCmd from '../actions-oclif/env/add';
export function getOclifHelpLinePairs(): [[string, string]] {
return [getCmdUsageDescriptionLinePair(EnvAddCmd)];
}
function getCmdUsageDescriptionLinePair(cmd: typeof Command): [string, string] {
const usage = (cmd.usage || '').toString().toLowerCase();
let description = '';
// note: [^] matches any characters (including line breaks), achieving the
// same effect as the 's' regex flag which is only supported by Node 9+
const matches = /\s*([^]+?)\n[^]*/.exec(cmd.description || '');
if (matches && matches.length > 1) {
description = _.lowerFirst(_.trimEnd(matches[1], '.'));
}
return [usage, description];
}