v3.0.0-beta.10 is not split out webpack runtime code

[yangmingshan]

Version

3.0.0-beta.10

Reproduction link

no need

Steps to reproduce

npm run build

What is expected?

webpack runtime code is split out and inline to html

What is actually happening?

webpack runtime code is inside app.js

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webpack optimization.runtimeChunk is disabled by default for zero config reason, see this issue, so need set it to true to split out webpack runtime code.

[yyx990803]

webpack 4 already handles correct hash for vendor chunks, there's little point in splitting the runtime chunk anymore.