During template compilation, the compiler can transform certain attributes, such as `src` URLs, into `require` calls, so that the target asset can be handled by webpack. For example, `<img src="./foo.png">` will attempt to locate the file `./foo.png` on your file system and include it as a dependency of your bundle.
Override the default compiler used to compile `<template>` blocks in single file components.
覆写用来编译单文件组件中 `<template>` 块的默认编译器。
## compilerOptions
## compilerOptions
-type: `Object`
-类型：`Object`
-default: `{}`
-默认值：`{}`
Options for the template compiler. When using the default `vue-template-compiler`, you can use this option to add custom compiler directives, modules, or discard whitespaces between template tags with `{ preserveWhitespace: false }`.
Configure ES2015+ to ES5 transpiling options for the generated render function code. The [transpiler](https://github.com/vuejs/vue-template-es2015-compiler) is a fork of [Buble](https://github.com/Rich-Harris/buble), so consult the available options [here](https://buble.surge.sh/guide/#using-the-javascript-api).
The template render functions compilation supports a special transform `stripWith` (enabled by default), which removes the `with` usage in generated render functions to make them strict-mode compliant. This is enabled by default.
Enable Vue 2.4 SSR compilation optimization that compiles part of the vdom trees returned by render functions into plain strings, which improves SSR performance. In some cases you might want to explicitly turn it off because the resulting render functions can only be used for SSR and cannot be used for client-side rendering or testing.
Whether to use webpack [Hot Module Replacement](https://webpack.js.org/concepts/hot-module-replacement/) to apply changes in the browser **without reloading the page**.
