Parse aliases and implications in config files

This adds support for doing '100: true' in a .taprc or package.json file.

bin/run.js

@@ -128,17 +128,11 @@ const main = async options => {
 
   const rc = parseRcFile(options.rcfile)
   debug('rc options', rc)
-  for (let i in rc) {
-    if (!options._.explicit.has(i))
-      options[i] = rc[i]
-  }
+  options._.update(rc)
 
   const pj = parsePackageJson()
   debug('package.json options', pj)
-  for (let i in pj) {
-    if (!options._.explicit.has(i))
-      options[i] = pj[i]
-  }
+  options._.update(pj)
 
   // tell chalk if we want color or not.
   if (!options.color)

package.json

@@ -33,7 +33,7 @@
     "import-jsx": "^2.0.0",
     "isexe": "^2.0.0",
     "istanbul-lib-processinfo": "^1.0.0",
-    "jackspeak": "^1.3.8",
+    "jackspeak": "^1.4.0",
     "minipass": "^2.3.5",
     "mkdirp": "^0.5.1",
     "nyc": "^14.1.0",

tap-snapshots/test-run-dump-config.js-TAP.test.js

@@ -151,7 +151,7 @@ bail: false
 branches: 100
 browser: true
 changed: false
-check-coverage: false
+check-coverage: true
 color: false
 comments: false
 coverage: false
@@ -165,7 +165,7 @@ help: false
 invert: false
 jobs: {number}
 jsx: true
-lines: 69
+lines: 100
 node-arg: []
 nyc-arg: []
 nyc-help: false

test/run/dump-config.js

@@ -36,7 +36,7 @@ t.test('package.json parsing', t => {
   const cases = {
     good: JSON.stringify({
       tap: {
-        lines: 69,
+        100: true,
         bail: true,
       }
     }),
@@ -91,6 +91,7 @@ t.test('good rc file', t => {
   const rc = tmpfile(t, 'taprc', `
 reporter: spec
 jobs: 3
+100: true
 `)
   run(['--dump-config', '-j4'], { env: {
     TAP_RCFILE: rc,