[typescript] tsc cannot resolve sub-modules

[shousper]

Problem description

Trying to import from material-ui/styles (any submodule actually) yields compilation errors from tsc when noImplicitAny is enabled.

(3,32): error TS7016: Could not find a declaration file for module 'material-ui/styles'. '/Users/shousper/Source/test/node_modules/material-ui/styles/index.js' implicitly has an 'any' type.
  Try `npm install @types/material-ui/styles` if it exists or add a new declaration (.d.ts) file containing `declare module 'material-ui/styles';`

Steps to reproduce

yarn add material-ui@next typescript
echo 'import { createMuiTheme } from \'material-ui/styles\'' > index.ts
echo 'const x = createMuiTheme()' >> index.ts
yarn run tsc -- --noImplicitAny index.ts

Versions

• Material-UI: 1.0.0-beta.6
• React: N/A
• Browser: N/A

[sebald]

Duplicate of #7853

tl;dr; add material-ui to your types in tsconfig. Will not be necessary anymore with the next beta release, though.