Fix build by using require for new cjs deps (#545)

* Fix build by using require for new cjs deps

* Fix getGlobalThis name and symbol-observable default import

Author: briancavalier

src/index.js

@@ -9,8 +9,8 @@ import * as base from '@most/prelude'
 import { of, empty, never } from './source/core'
 import { from } from './source/from'
 import { periodic } from './source/periodic'
-import provideSymbolObservable from 'symbol-observable/ponyfill'
-import { getPolyfill as getGlobalThis } from 'globalthis'
+const getGlobalThis = require('globalthis').getPolyfill
+const provideSymbolObservable = require('symbol-observable/ponyfill').default
 
 const symbolObservable = provideSymbolObservable(getGlobalThis())
 

src/observable/getObservable.js

@@ -2,8 +2,8 @@
 /** @author Brian Cavalier */
 /** @author John Hann */
 
-import provideSymbolObservable from 'symbol-observable/ponyfill'
-import { getPolyfill as getGlobalThis } from 'globalthis'
+const getGlobalThis = require('globalthis').getPolyfill
+const provideSymbolObservable = require('symbol-observable/ponyfill').default
 
 const symbolObservable = provideSymbolObservable(getGlobalThis())
 

test/most-test.js

@@ -1,8 +1,8 @@
 import { spec, referee } from 'buster'
 
 import * as most from '../src/index'
-import provideSymbolObservable from 'symbol-observable/ponyfill'
-import { getPolyfill as getGlobalThis } from 'globalthis'
+const getGlobalThis = require('globalthis').getPolyfill
+const provideSymbolObservable = require('symbol-observable/ponyfill').default
 
 const symbolObservable = provideSymbolObservable(getGlobalThis())