[core] Use lts

Author: oliviertassinari

packages/material-ui/package.json

@@ -48,14 +48,14 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.4.4",
-    "@material-ui/popper.js": "^1.16.0",
     "@material-ui/styles": "^4.9.6",
     "@material-ui/system": "^4.9.6",
     "@material-ui/types": "^5.0.0",
     "@material-ui/utils": "^4.9.6",
     "@types/react-transition-group": "^4.2.0",
     "clsx": "^1.0.2",
     "hoist-non-react-statics": "^3.3.2",
+    "popper.js": "^1.16.1-lts",
     "prop-types": "^15.7.2",
     "react-is": "^16.8.0",
     "react-transition-group": "^4.3.0"

packages/material-ui/src/Popper/Popper.d.ts

@@ -1,5 +1,5 @@
 import * as React from 'react';
-import PopperJs, { ReferenceObject } from '@material-ui/popper.js';
+import PopperJs, { ReferenceObject } from 'popper.js';
 import { PortalProps } from '../Portal';
 import { TransitionProps } from '../transitions/transition';
 

packages/material-ui/src/Popper/Popper.js

@@ -1,6 +1,6 @@
 import * as React from 'react';
 import PropTypes from 'prop-types';
-import PopperJs from '@material-ui/popper.js';
+import PopperJs from 'popper.js';
 import { chainPropTypes, refType } from '@material-ui/utils';
 import { useTheme } from '@material-ui/styles';
 import Portal from '../Portal';

packages/material-ui/src/Popper/Popper.spec.tsx

@@ -1,6 +1,6 @@
 import * as React from 'react';
 import Tooltip from '@material-ui/core/Tooltip';
-import PopperJs from '@material-ui/popper.js';
+import PopperJs from 'popper.js';
 
 interface Props {
   children: React.ReactElement;

packages/material-ui/src/Popper/Popper.test.js

@@ -7,7 +7,7 @@ import { ThemeProvider, createMuiTheme } from '@material-ui/core/styles';
 import describeConformance from '@material-ui/core/test-utils/describeConformance';
 import { createClientRender } from 'test/utils/createClientRender';
 import consoleErrorMock from 'test/utils/consoleErrorMock';
-import PopperJs from '@material-ui/popper.js';
+import PopperJs from 'popper.js';
 import Grow from '../Grow';
 import Popper from './Popper';
 

yarn.lock

@@ -2017,11 +2017,6 @@
     react-transition-group "^4.0.0"
     rifm "^0.7.0"
 
-"@material-ui/popper.js@^1.16.0":
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/@material-ui/popper.js/-/popper.js-1.16.0.tgz#7d6b00edb406610fe20f9ea94796738417ea817b"
-  integrity sha512-2NvFNg7lLt6xt3mrprgiqLAgR9eYgMhM3yKQGMlxyP0j41iHyOITK3ecBPFtxtp/3EvAoLMfi7ZOgtEPhcK6mg==
-
 "@material-ui/react-transition-group@^4.2.0":
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/@material-ui/react-transition-group/-/react-transition-group-4.2.0.tgz#afec833bbcc79f05a9b4d4828b3e07965cc7e321"
@@ -12411,6 +12406,11 @@ [email protected]:
   dependencies:
     ts-pnp "^1.1.2"
 
+popper.js@^1.16.1-lts:
+  version "1.16.1"
+  resolved "https://registry.yarnpkg.com/popper.js/-/popper.js-1.16.1.tgz#2a223cb3dc7b6213d740e40372be40de43e65b1b"
+  integrity sha512-Wb4p1J4zyFTbM+u6WuO4XstYx4Ky9Cewe4DWrel7B0w6VVICvPwdOpotjzcf6eD8TsckVnIMNONQyPIUFOUbCQ==
+
 posix-character-classes@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"