[SQUASH] compat with <7.6.0

Author: ofrobots

lib/_inspect.js

@@ -23,6 +23,7 @@
 const { spawn } = require('child_process');
 const { EventEmitter } = require('events');
 const net = require('net');
+const semver = require('semver');
 const util = require('util');
 
 const runAsStandalone = typeof __dirname !== 'undefined';
@@ -94,30 +95,30 @@ function portIsFree(host, port, timeout = 2000) {
 
 function runScript(script, scriptArgs, inspectHost, inspectPort, childPrint) {
   return portIsFree(inspectHost, inspectPort)
-    .then(() => {
-      return new Promise((resolve) => {
-        const args = [
-          '--inspect',
-          `--inspect-brk=${inspectPort}`,
-        ].concat([script], scriptArgs);
-        const child = spawn(process.execPath, args);
-        child.stdout.setEncoding('utf8');
-        child.stderr.setEncoding('utf8');
-        child.stdout.on('data', childPrint);
-        child.stderr.on('data', childPrint);
-
-        let output = '';
-        function waitForListenHint(text) {
-          output += text;
-          if (/chrome-devtools:\/\//.test(output)) {
-            child.stderr.removeListener('data', waitForListenHint);
-            resolve(child);
+      .then(() => {
+        return new Promise((resolve) => {
+          const args = (semver.satisfies(process.version, '>=7.6.0') ?
+                            [`--inspect-brk=${inspectPort}`] :
+                            ['--inspect', `--debug-brk=${inspectPort}`])
+                           .concat([script], scriptArgs);
+          const child = spawn(process.execPath, args);
+          child.stdout.setEncoding('utf8');
+          child.stderr.setEncoding('utf8');
+          child.stdout.on('data', childPrint);
+          child.stderr.on('data', childPrint);
+
+          let output = '';
+          function waitForListenHint(text) {
+            output += text;
+            if (/chrome-devtools:\/\//.test(output)) {
+              child.stderr.removeListener('data', waitForListenHint);
+              resolve(child);
+            }
           }
-        }
 
-        child.stderr.on('data', waitForListenHint);
+          child.stderr.on('data', waitForListenHint);
+        });
       });
-    });
 }
 
 function createAgentProxy(domain, client) {