[core] Upgrade preval

.babelrc

@@ -30,7 +30,7 @@
     },
     "docs-development": {
       "plugins": [
-        "./scripts/material-ui-babel-preval",
+        "babel-plugin-preval",
         [
           "module-resolver",
           {
@@ -48,7 +48,7 @@
     },
     "docs-production": {
       "plugins": [
-        "./scripts/material-ui-babel-preval",
+        "babel-plugin-preval",
         [
           "module-resolver",
           {

docs/src/modules/utils/findPages.js

@@ -1,4 +1,4 @@
-import { findPages } from './find';
+import { findPages } from 'docs/src/modules/utils/find';
 
 const pages = findPages({
   front: true,

docs/src/pages/style/typography/typography.md

@@ -4,6 +4,8 @@ components: Typography
 
 # Typography
 
+Use typography to present your design and content as clearly and efficiently as possible.
+
 Too many type sizes and styles at once can spoil any layout.
 A [typographic scale](https://material.io/design/typography/#type-scale) has a limited set of type sizes that work well together along with the layout grid.
 
@@ -42,7 +44,7 @@ Material-UI default typography configuration only relies on 300, 400 and 500 fon
 
 {{"demo": "pages/style/typography/Types.js"}}
 
-## CSS in JS
+## Theme
 
 In some situation you might not be able to use the `Typography` component.
 Hopefully, you might be able to take advantage of the [`typography`](/customization/default-theme?expend-path=$.typography) keys of the theme.

package.json

@@ -75,7 +75,7 @@
     "babel-loader": "8.0.0-beta.2",
     "babel-plugin-istanbul": "^4.1.5",
     "babel-plugin-module-resolver": "^3.0.0",
-    "babel-plugin-preval": "^1.6.4",
+    "babel-plugin-preval": "^2.0.0",
     "babel-plugin-react-remove-properties": "^0.2.5",
     "babel-plugin-transform-dev-warning": "^0.1.0",
     "babel-plugin-transform-react-constant-elements": "^6.23.0",

yarn.lock

@@ -1879,7 +1879,7 @@ babel-plugin-istanbul@^4.1.5:
     istanbul-lib-instrument "^1.10.1"
     test-exclude "^4.2.1"
 
-babel-plugin-macros@^2.0.0:
+babel-plugin-macros@^2.2.2:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/babel-plugin-macros/-/babel-plugin-macros-2.2.2.tgz#049c93f4b934453688a6ec38bba529c55bf0fa1f"
   dependencies:
@@ -1895,14 +1895,12 @@ babel-plugin-module-resolver@^3.0.0:
     reselect "^3.0.1"
     resolve "^1.4.0"
 
-babel-plugin-preval@^1.6.4:
-  version "1.6.4"
-  resolved "https://registry.yarnpkg.com/babel-plugin-preval/-/babel-plugin-preval-1.6.4.tgz#96febe8172b3ca6c3d03ed96eeb0382ba4b18056"
+babel-plugin-preval@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-preval/-/babel-plugin-preval-2.0.0.tgz#7e30dce715d7e6d8e22e9ca81d029522f1fc4c8a"
   dependencies:
-    babel-plugin-macros "^2.0.0"
-    babel-register "^6.26.0"
-    babylon "^6.18.0"
-    require-from-string "^2.0.1"
+    babel-plugin-macros "^2.2.2"
+    require-from-string "^2.0.2"
 
 babel-plugin-react-remove-properties@^0.2.5:
   version "0.2.5"
@@ -9285,7 +9283,7 @@ require-directory@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
 
-require-from-string@^2.0.1:
+require-from-string@^2.0.1, require-from-string@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.2.tgz#89a7fdd938261267318eafe14f9c32e598c36909"