Remove unused code (#751)

Author: 3mard

package-lock.json

@@ -52,7 +52,6 @@
     "@types/chai": "^4.0.4",
     "@types/diff": "^3.2.1",
     "@types/minimist": "^1.2.0",
-    "@types/mkdirp": "^0.5.0",
     "@types/mocha": "^5.0.0",
     "@types/node": "^10.0.3",
     "@types/proxyquire": "^1.3.28",
@@ -79,7 +78,6 @@
     "diff": "^3.1.0",
     "make-error": "^1.1.1",
     "minimist": "^1.2.0",
-    "mkdirp": "^0.5.1",
     "source-map-support": "^0.5.6",
     "yn": "^2.0.0"
   }

package.json

@@ -1,9 +1,6 @@
 import { relative, basename, extname, resolve, dirname, join } from 'path'
-import { readFileSync, writeFileSync } from 'fs'
-import { EOL, tmpdir, homedir } from 'os'
+import { EOL } from 'os'
 import sourceMapSupport = require('source-map-support')
-import mkdirp = require('mkdirp')
-import crypto = require('crypto')
 import yn = require('yn')
 import arrify = require('arrify')
 import { BaseError } from 'make-error'
@@ -150,15 +147,6 @@ export interface Register {
   getTypeInfo (code: string, fileName: string, position: number): TypeInfo
 }
 
-/**
- * Return a default temp directory based on home directory of user.
- */
-function getTmpDir (): string {
-  const hash = crypto.createHash('sha256').update(homedir(), 'utf8').digest('hex')
-
-  return join(tmpdir(), `ts-node-${hash}`)
-}
-
 /**
  * Register TypeScript compiler.
  */
@@ -193,7 +181,6 @@ export function register (opts: Options = {}): Register {
   // Require the TypeScript compiler and configuration.
   const cwd = process.cwd()
   const { compilerOptions, project, skipProject } = options
-  const compiler = options.compiler || 'typescript'
   const typeCheck = options.typeCheck === true || options.transpileOnly !== true
   const transformers = options.transformers || undefined
   const readFile = options.readFile || ts.sys.readFile
@@ -504,13 +491,6 @@ function updateSourceMap (sourceMapText: string, fileName: string) {
   return JSON.stringify(sourceMap)
 }
 
-/**
- * Create a hash of the current configuration.
- */
-function getCompilerDigest (obj: object) {
-  return crypto.createHash('sha256').update(JSON.stringify(obj), 'utf8').digest('hex')
-}
-
 /**
  * Filter diagnostics.
  */