Do the Node.js check ourselves

package.json

@@ -60,7 +60,6 @@
 		"codecov": "^3.1.0",
 		"del-cli": "^1.1.0",
 		"dot-prop": "^4.2.0",
-		"is-node": "^1.0.2",
 		"license-webpack-plugin": "^2.0.2",
 		"lodash.isequal": "^4.5.0",
 		"nyc": "^13.1.0",

source/lib/utils/infer-label.ts

@@ -1,7 +1,7 @@
-import lazyFS from './node/fs';
 import {CallSite} from 'callsites';
-import * as isNode from 'is-node';
+import lazyFS from './node/fs';
 import isValidIdentifier from './is-valid-identifier';
+import isNode from './node/is-node';
 
 // Regex to extract the label out of the `ow` function call
 const labelRegex = /^.*?\((.*?)[,)]/;

source/lib/utils/node/is-node.ts

@@ -0,0 +1,2 @@
+// tslint:disable-next-line strict-type-predicates no-typeof-undefined
+export default Boolean(typeof process !== 'undefined' && process.versions && process.versions.node);

source/types.d.ts

@@ -1,2 +0,0 @@
-declare module 'is-valid-identifier';
-declare module 'is-node';