SyntaxError: Unexpected token import when starting with --interpreter node<10

[kimmobrunfeldt]

What's going wrong?

This is a follow-up issue after #4588. It seems that the issue didn't address this use case and that's why I created a new one.

I'm using node@10.8.0 to launch pm2. When starting a project which requires older node version 6.9.4, pm2 fails.

I'm starting with command: pm2 start index.js --interpreter ~/.nvm/versions/node/v6.9.4/bin/node. Process starts but goes to errored state immediately, logs show the following error:

0|index    | /Users/kimmo/.nvm/versions/node/v10.8.0/lib/node_modules/pm2/lib/ProcessContainerFork.js:29
0|index    |     import(process.env.pm_exec_path);
0|index    |     ^^^^^^
0|index    | SyntaxError: Unexpected token import
0|index    |     at Object.exports.runInThisContext (vm.js:76:16)
0|index    |     at Module._compile (module.js:542:28)
0|index    |     at Object.Module._extensions..js (module.js:579:10)
0|index    |     at Module.load (module.js:487:32)
0|index    |     at tryModuleLoad (module.js:446:12)
0|index    |     at Function.Module._load (module.js:438:3)
0|index    |     at Module.runMain (module.js:604:10)
0|index    |     at run (bootstrap_node.js:394:7)
0|index    |     at startup (bootstrap_node.js:149:9)
0|index    |     at bootstrap_node.js:509:3

How could we reproduce this issue?

nvm install 6.9.4
nvm install 10.8.0
nvm use 10.8.0
npm install -g pm2

echo "console.log('test')" > index.js

pm2 start index.js --interpreter ~/.nvm/versions/node/v6.9.4/bin/node

Using an absolute path for the interpreter had same effect.

This was also reproduced with pm2 start index.js --interpreter ~/.nvm/versions/node/v8.12.0/bin/node. I suspect it happens with all node versions under 10 based on the other issue comments.

Supporting information

--- PM2 report ----------------------------------------------------------------
Date                 : Fri Apr 24 2020 11:30:23 GMT+0300 (Eastern European Summer Time)
===============================================================================
--- Daemon -------------------------------------------------
pm2d version         : 4.4.0
node version         : 10.8.0
node path            : /Users/kimmo/.nvm/versions/node/v10.8.0/bin/pm2
argv                 : /Users/kimmo/.nvm/versions/node/v10.8.0/bin/node,/Users/kimmo/.nvm/versions/node/v10.8.0/lib/node_modules/pm2/lib/Daemon.js
argv0                : node
user                 : kimmo
uid                  : 501
gid                  : 20
uptime               : 3min
===============================================================================
--- CLI ----------------------------------------------------
local pm2            : 4.4.0
node version         : 10.8.0
node path            : /Users/kimmo/.nvm/versions/node/v10.8.0/bin/pm2
argv                 : /Users/kimmo/.nvm/versions/node/v10.8.0/bin/node,/Users/kimmo/.nvm/versions/node/v10.8.0/bin/pm2,report
argv0                : node
user                 : kimmo
uid                  : 501
gid                  : 20
===============================================================================
--- System info --------------------------------------------
arch                 : x64
platform             : darwin
type                 : Darwin
cpus                 : Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
cpus nb              : 8
freemem              : 316932096
totalmem             : 17179869184
home                 : /Users/kimmo
===============================================================================
--- PM2 list -----------------------------------------------
┌─────┬──────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id  │ name     │ namespace   │ version │ mode    │ pid      │ uptime │ ↺    │ status    │ cpu      │ mem      │ user     │ watching │
├─────┼──────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0   │ index    │ default     │ 1.0.0   │ fork    │ 0        │ 0      │ 15   │ errored   │ 0%       │ 0b       │ kimmo    │ disabled │
└─────┴──────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
===============================================================================
--- Daemon logs --------------------------------------------
/Users/kimmo/.pm2/pm2.log last 20 lines:
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] starting in -fork mode-
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] online
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] starting in -fork mode-
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] online
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] starting in -fork mode-
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] online
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] starting in -fork mode-
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] online
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] starting in -fork mode-
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] online
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] starting in -fork mode-
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] online
PM2        | 2020-04-24T11:26:50: PM2 log: App [index:0] exited with code [1] via signal [SIGINT]
PM2        | 2020-04-24T11:26:50: PM2 log: Script /Users/kimmo/code/alvarcarto/pm2-issue/index.js had too many unstable restarts (16). Stopped. "errored"

[Unitech]

Use pm2 3.x

npm install pm2@3 -g

[vnen]

So the only solution to launch process with node<10 is to stay on an old pm2 version?

[Fabryz]

I've just installed PM2 4.4.0 and I have this issue too.
Using Node v12.17.0 on nvm, with MacOS.
Was launching:
pm2-runtime start ecosystem.config.js --env development

launching with this seem to work fine:
pm2 start script.js

[Fabryz]

I've just installed PM2 4.4.0 and I have this issue too.
Using Node v12.17.0 on nvm, with MacOS.
Was launching:
pm2-runtime start ecosystem.config.js --env development

launching with this seem to work fine:
pm2 start script.js

Looks like I was using the wrong nodejs version on the interpreter field in the ecosystem.config.js file. 👍

[soberirving]

使用 pm2 3.x

npm install pm2@3 -g

thanks！node9.0.0+pm2v3.5.0 are well matched，and it would be better if you could provide a matching list on the homepage！