npm install and start is broken

[msdalp]

Running on both Ubuntu 18:04 and MacOS with npm 6.13.4 and Node 13.9.0.

> Starting dev server...


 ERROR  Failed to compile with 6 errors                                                                                                                                                                                             5:37:41 PM

These dependencies were not found:

* mermaid/src/utils in ./src/extensions/mermaidExtension.js
* mermaid/src/diagrams/flowchart/flowRenderer in ./src/extensions/mermaidExtension.js
* mermaid/src/diagrams/sequence/sequenceRenderer in ./src/extensions/mermaidExtension.js
* mermaid/src/diagrams/gantt/ganttRenderer in ./src/extensions/mermaidExtension.js
* mermaid/src/diagrams/class/classRenderer in ./src/extensions/mermaidExtension.js
* mermaid/src/diagrams/git/gitGraphRenderer in ./src/extensions/mermaidExtension.js

To install them, you can run: npm install --save mermaid/src/utils mermaid/src/diagrams/flowchart/flowRenderer mermaid/src/diagrams/sequence/sequenceRenderer mermaid/src/diagrams/gantt/ganttRenderer mermaid/src/diagrams/class/classRenderer mermaid/src/diagrams/git/gitGraphRenderer
> Listening at http://localhost:8080

Trying to have a clean install on my local computer but many packages are deprecated or broken. After updating manually and npm audit it compiles but gives the error above and say Cannot GET /app. Anyone tried lately and have the proper setup files?

PS: with nvm I could run the app by downgrading node to v8.17.0

[jernejcvek]

Resolved by applying commits of pull requests #1475 and #1590, i.e.:

• update gulp to 4.x, mermaid to ^8.4.6, and related packages,
• edit Webpack configuration (webpack.base.conf.js),
• modify mermaidExtension.js.

Tested on Node v12.x.