From eb5620889a7b502194f584a096f28364dae46c41 Mon Sep 17 00:00:00 2001
From: Nelis Bijl <n.bijl@tjip.com>
Date: Thu, 22 Dec 2016 10:15:59 +0100
Subject: [PATCH 1/3] runonce flag added; same as initial but process exits
 after initial run

---
 index.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index e638668..eea2d9a 100755
--- a/index.js
+++ b/index.js
@@ -25,6 +25,7 @@ var defaultOpts = {
     verbose: false,
     silent: false,
     initial: false,
+    runonce: false,
     command: null
 };
 
@@ -83,6 +84,11 @@ var argv = require('yargs')
         default: defaultOpts.initial,
         type: 'boolean'
     })
+    .option('runonce', {
+        describe: 'When set, command is initially run once and the process is terminated afterwards',
+        default: defaultOpts.runonce,
+        type: 'boolean'
+    })
     .option('p', {
         alias: 'polling',
         describe: 'Whether to use fs.watchFile(backed by polling) instead of ' +
@@ -180,11 +186,12 @@ function createChokidarOpts(opts) {
     opts.ignore = _resolveIgnoreOpt(opts.ignore);
 
     var chokidarOpts = {
+        persistent: !opts.runonce,
         followSymlinks: opts.followSymlinks,
         usePolling: opts.polling,
         interval: opts.pollInterval,
         binaryInterval: opts.pollIntervalBinary,
-        ignoreInitial: !opts.initial
+        ignoreInitial: !opts.runonce && !opts.initial
     };
     if (opts.ignore) chokidarOpts.ignored = opts.ignore;
 

From 5cb9eb43eb07038ab2b05d79aa9cb3a022fec632 Mon Sep 17 00:00:00 2001
From: Nelis Bijl <n.bijl@tjip.com>
Date: Wed, 1 Feb 2017 09:39:29 +0100
Subject: [PATCH 2/3] Start debounce after initial stage

---
 index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index eea2d9a..b483b37 100755
--- a/index.js
+++ b/index.js
@@ -146,7 +146,7 @@ function startWatching(opts) {
     var watcher = chokidar.watch(opts.patterns, chokidarOpts);
 
     var throttledRun = _.throttle(run, opts.throttle);
-    var debouncedRun = _.debounce(throttledRun, opts.debounce);
+    var debouncedRun = run; // process all requests during initial stage (runonce or initial)
     watcher.on('all', function(event, path) {
         var description = EVENT_DESCRIPTIONS[event] + ':';
 
@@ -178,6 +178,8 @@ function startWatching(opts) {
         if (!opts.silent) {
             console.error('Watching', '"' + list + '" ..');
         }
+        // debounce after initial stage
+        debouncedRun = _.debounce(throttledRun, opts.debounce);
     });
 }
 

From 86485f59b048a08cea5ab8d9f73e8f804a3306a8 Mon Sep 17 00:00:00 2001
From: Nelis Bijl <n.bijl@tjip.com>
Date: Thu, 22 Dec 2016 10:15:59 +0100
Subject: [PATCH 3/3] runonce flag added; same as initial but process exits
 after initial run

Start debounce after initial stage
---
 index.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index e638668..b483b37 100755
--- a/index.js
+++ b/index.js
@@ -25,6 +25,7 @@ var defaultOpts = {
     verbose: false,
     silent: false,
     initial: false,
+    runonce: false,
     command: null
 };
 
@@ -83,6 +84,11 @@ var argv = require('yargs')
         default: defaultOpts.initial,
         type: 'boolean'
     })
+    .option('runonce', {
+        describe: 'When set, command is initially run once and the process is terminated afterwards',
+        default: defaultOpts.runonce,
+        type: 'boolean'
+    })
     .option('p', {
         alias: 'polling',
         describe: 'Whether to use fs.watchFile(backed by polling) instead of ' +
@@ -140,7 +146,7 @@ function startWatching(opts) {
     var watcher = chokidar.watch(opts.patterns, chokidarOpts);
 
     var throttledRun = _.throttle(run, opts.throttle);
-    var debouncedRun = _.debounce(throttledRun, opts.debounce);
+    var debouncedRun = run; // process all requests during initial stage (runonce or initial)
     watcher.on('all', function(event, path) {
         var description = EVENT_DESCRIPTIONS[event] + ':';
 
@@ -172,6 +178,8 @@ function startWatching(opts) {
         if (!opts.silent) {
             console.error('Watching', '"' + list + '" ..');
         }
+        // debounce after initial stage
+        debouncedRun = _.debounce(throttledRun, opts.debounce);
     });
 }
 
@@ -180,11 +188,12 @@ function createChokidarOpts(opts) {
     opts.ignore = _resolveIgnoreOpt(opts.ignore);
 
     var chokidarOpts = {
+        persistent: !opts.runonce,
         followSymlinks: opts.followSymlinks,
         usePolling: opts.polling,
         interval: opts.pollInterval,
         binaryInterval: opts.pollIntervalBinary,
-        ignoreInitial: !opts.initial
+        ignoreInitial: !opts.runonce && !opts.initial
     };
     if (opts.ignore) chokidarOpts.ignored = opts.ignore;