Update dependency webpack to ~4.30.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
webpack	devDependencies	minor	~4.29.0 -> ~4.30.0	source

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Release Notes

webpack/webpack

v4.30.0

Compare Source

Features

• add amd: false to disable AMD support
• Compilation.hooks.finishModules now also allows async plugins
• add output.libraryTarget: "system" to compile for SystemJs environment

Bugfixes

• fix generating a null id when concatenating an entry module in a different chunk
• fix unneeded chunk references when splitting modules from chunks
• fix parsing of function name in function scope

Performance

• Lazy require some internal files
• Faster way to generate function headers

Contributing

• Run prettier on examples markdown

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[coveralls]

Coverage remained the same at 96.835% when pulling 4f37280 on renovate/webpack-4.x into 1ba127f on master.

[coveralls]

Coverage remained the same at 96.835% when pulling 4f37280 on renovate/webpack-4.x into 1ba127f on master.