Failed to install acorn-node@1.6.1

npm install error message:

...
npm ERR! node v6.12.0
npm ERR! npm  v2.15.12
npm ERR! code EPEERINVALID

npm ERR! peerinvalid The package acorn@5.7.3 does not satisfy its siblings' peerDependencies requirements!
...

It seems that updated dependency acorn-dynamic-import@4.0.0 requires acorn@6.0.2
But acorn-node@1.6.1 provides acorn@^6.0.1

...
│ │ │   ├── https-browserify@1.0.0
│ │ │   ├─┬ insert-module-globals@7.2.0
│ │ │   │ ├─┬ acorn-node@1.6.1
│ │ │   │ │ ├── UNMET PEER DEPENDENCY acorn@6.0.2
│ │ │   │ │ ├── acorn-dynamic-import@4.0.0
│ │ │   │ │ └── acorn-walk@6.1.0
│ │ │   │ ├─┬ concat-stream@1.6.2
│ │ │   │ │ └── buffer-from@1.1.1
│ │ │   │ ├── is-buffer@1.1.6
...

[goto-bus-stop]

Thanks for the report. npm 3+ are looser about peer dependencies, I think, than npm 2, so I didn't notice it being a problem.

[ljharb]

npm 2 is EOL anyways; on node 6 you should be using npm 3 at least (which i think is what it comes with).

npm@2 is used within cordova under the hood

[ljharb]

Still? Is there a tracking issue for them to update it?

[brody4hire]

npm@2 is used within cordova under the hood

Correct on Cordova 7, not correct on Cordova 8.

Cordova 8 uses the system-installed npm version, which should be at least npm@3.

[TerryCapan]

Currently running into a similar problem. Also commented here: kesne/acorn-dynamic-import#18

│ ├─┬ insert-module-globals@7.2.0
│ │ ├─┬ acorn-node@1.6.2
│ │ │ ├── UNMET PEER DEPENDENCY acorn@6.0.4
│ │ │ ├── acorn-dynamic-import@4.0.0
│ │ │ ├── acorn-walk@6.1.1
│ │ │ └── xtend@4.0.1 deduped