Improve stdin arg parsing

src/fetch_interface.ts

@@ -1,6 +1,7 @@
 import { Limiter, Semaphore, timeout as timeoutWrapper } from 'async-toolbox'
 import * as crossFetch from 'cross-fetch'
 import { Interval } from 'limiter'
+import { Logger } from './logger'
 
 import { assign, Options } from './util'
 
@@ -13,6 +14,7 @@ interface FetchWrapperOptions {
   headers: { [key: string]: string },
   timeout: number
   maxConcurrency: number | { tokens: number, interval: Interval }
+  logger?: Logger
 }
 
 export class FetchInterfaceWrapper implements FetchInterface {

src/index.ts

@@ -243,6 +243,7 @@ class Linkscanner extends Transform {
       headers: headerObj,
       maxConcurrency,
       timeout,
+      logger: this._options.logger
     })
   }
 }

src/source.ts

@@ -5,7 +5,7 @@ import { Logger } from './logger'
 
 export function loadSource(args: { source: string | string[] }, logger: Logger) {
   // specify '-' to read from stdin
-  if (args.source == '-' || args.source == ['-'] ||
+  if (isStdin(args.source) ||
       // or if no URL is given on the command line
       args.source.length == 0 && typeof process != 'undefined') {
     logger.debug('reading URLs from STDIN')
@@ -49,3 +49,15 @@ class LineByLineTransform extends Transform {
     cb()
   }
 }
+
+function isStdin(source: any) {
+  if(source == '-'){
+    return true
+  }
+
+  if (Array.isArray(source)) {
+    return source.length == 1 && source[0] == '-'
+  }
+
+  return false
+}