feat!: change current exported function "log"

BREAKING CHANGE: the exports on this package have changed.  The current
functionality has moved to a `log` function in the exports.

README.md

@@ -8,6 +8,10 @@ log events that can be consumed by a listener on the process object.
 
 ## API
 
+```js
+const { log } = require('proc-log')
+```
+
 * `log.error(...args)` calls `process.emit('log', 'error', ...args)`
   The highest log level.  For printing extremely serious errors that
   indicate something went wrong.
@@ -87,4 +91,4 @@ process.on('log', (level, ...args) => {
 process.on('log', (...args) => {
   fs.appendFileSync('debug.log', args.join(' '))
 })
-```
+```

lib/index.js

@@ -1,23 +1,18 @@
-// emits 'log' events on the process
-const LEVELS = [
-  'notice',
-  'error',
-  'warn',
-  'info',
-  'verbose',
-  'http',
-  'silly',
-  'pause',
-  'resume',
-]
-
-const log = level => (...args) => process.emit('log', level, ...args)
-
-const logger = {}
-for (const level of LEVELS) {
-  logger[level] = log(level)
+const log = {
+  LEVELS: [
+    'notice',
+    'error',
+    'warn',
+    'info',
+    'verbose',
+    'http',
+    'silly',
+    'pause',
+    'resume',
+  ],
+}
+for (const level of log.LEVELS) {
+  log[level] = (...args) => process.emit('log', level, ...args)
 }
 
-logger.LEVELS = LEVELS
-
-module.exports = logger
+module.exports = { log }

test/index.js

@@ -1,5 +1,5 @@
 const t = require('tap')
-const log = require('../')
+const { log } = require('../')
 const { LEVELS } = log
 
 t.matchSnapshot(LEVELS, 'log levels')