Revert "Parallelize nodejs file checks"

This reverts commit 99bdf27ecac655b54b03d7389b1b24970a1ec9ec.

5 files changed, 12 insertions, 133 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 3a6346a1b..bc747f9a2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -114,37 +114,6 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "crossbeam-deque"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "crossbeam-epoch"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "crossbeam-utils"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
 name = "curl-sys"
 version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -169,11 +138,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "either"
-version = "1.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
 name = "failure"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -223,11 +187,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "lazy_static"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
 name = "libc"
 version = "0.2.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -284,24 +243,11 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "memoffset"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
 name = "nodrop"
 version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "num_cpus"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
 name = "openssl-probe"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -371,27 +317,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "rayon"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "rayon-core"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
 name = "rdrand"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -442,11 +367,6 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "scopeguard"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
 name = "semver"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -472,7 +392,6 @@ dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "dirs 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -599,27 +518,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
-"checksum crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f739f8c5363aca78cfb059edf753d8f0d36908c348f3d8d1503f03d8b75d9cf3"
-"checksum crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "927121f5407de9956180ff5e936fe3cf4324279280001cd56b669d28ee7e9150"
-"checksum crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2760899e32a1d58d5abb31129f8fae5de75220bc2176e77ff7c627ae45c918d9"
 "checksum curl-sys 0.4.17 (registry+https://github.com/rust-lang/crates.io-index)" = "7b8d8e51964f58c8053337fcef48e1c4608c7ee70c6f2e457674a97dda5a5828"
 "checksum dirs 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
-"checksum either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5527cfe0d098f36e3f8839852688e63c8fff1c90b2b405aef730615f9a7bcf7b"
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
 "checksum failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ea1063915fd7ef4309e222a5a07cf9c319fb9c7836b1f89b85458672dbb127e1"
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 "checksum git2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c7339329bfa14a00223244311560d11f8f489b453fb90092af97f267a6090ab0"
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
-"checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)" = "bedcc7a809076656486ffe045abeeac163da1b558e963a31e29fbfbeba916917"
 "checksum libgit2-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)" = "48441cb35dc255da8ae72825689a95368bf510659ae1ad55dc4aa88cb1789bf1"
 "checksum libssh2-sys 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "126a1f4078368b163bfdee65fbab072af08a1b374a5551b21e87ade27b1fbf9d"
 "checksum libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb5e43362e38e2bca2fd5f5134c4d4564a23a5c28e9b95411652021a8675ebe"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
-"checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
-"checksum num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1a23f0ed30a54abaa0c7e83b1d2d87ada7c3c23078d1d87815af3e3b6385fbba"
 "checksum openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 "checksum openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)" = "33c86834957dd5b915623e94f2f4ab2c70dd8f6b70679824155d5ae21dbd495d"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
@@ -629,8 +541,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
 "checksum rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d0e7a549d590831370895ab7ba4ea0c1b6b011d106b5ff2da6eee112615e6dc0"
 "checksum rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "7b75f676a1e053fc562eafbb47838d67c84801e38fc1ba459e8f180deabd5071"
-"checksum rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "373814f27745b2686b350dd261bfd24576a6fb0e2c5919b3a2b6005f820b0473"
-"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
 "checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
 "checksum redox_syscall 0.1.52 (registry+https://github.com/rust-lang/crates.io-index)" = "d32b3053e5ced86e4bc0411fec997389532bf56b000e66cb4884eeeb41413d69"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
@@ -638,7 +548,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum rustc-demangle 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "adacaae16d02b6ec37fdc7acfcddf365978de76d1983d3ee22afc260e1ca9619"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
-"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c4488ae950c49d403731982257768f48fada354a5203fe81f9bb6f43ca9002be"
diff --git a/Cargo.toml b/Cargo.toml
index 0e51981ba..69dadcbf3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,4 +9,3 @@ clap = "2.32.0"
 ansi_term = "0.11.0"
 dirs = "1.0.5"
 git2 = "0.8.0"
-rayon = "1.0.3"
diff --git a/benches/benchmarks.rs b/benches/benchmarks.rs
index 94960d26f..beb7eede7 100644
--- a/benches/benchmarks.rs
+++ b/benches/benchmarks.rs
@@ -8,61 +8,37 @@ mod tests {
     use starship::{modules, print};
     use test::Bencher;
 
-    // #[bench]
-    // fn full_prompt_bench(b: &mut Bencher) {
-    //     b.iter(|| {
-    //         let args = App::new("starship")
-    //             .arg(Arg::with_name("status_code"))
-    //             .get_matches_from(vec!["starship", "0"]);
-
-    //         starship::print::prompt(args)
-    //     });
-    // }
-
     #[bench]
-    fn char_section_bench(b: &mut Bencher) {
+    fn full_prompt_bench(b: &mut Bencher) {
         b.iter(|| {
             let args = App::new("starship")
                 .arg(Arg::with_name("status_code"))
                 .get_matches_from(vec!["starship", "0"]);
 
-            let segment = modules::handle("char", &args);
-            print::stringify_segment(segment)
+            starship::print::prompt(args)
         });
     }
 
     #[bench]
-    fn dir_section_bench(b: &mut Bencher) {
-        b.iter(|| {
-            let args = App::new("starship")
-                .arg(Arg::with_name("status_code"))
-                .get_matches_from(vec!["starship", "0"]);
-
-            let segment = modules::handle("dir", &args);
-            print::stringify_segment(segment)
-        });
-    }
-
-        #[bench]
-    fn line_break_section_bench(b: &mut Bencher) {
+    fn char_section_bench(b: &mut Bencher) {
         b.iter(|| {
             let args = App::new("starship")
                 .arg(Arg::with_name("status_code"))
                 .get_matches_from(vec!["starship", "0"]);
 
-            let segment = modules::handle("line_break", &args);
+            let segment = modules::handle("char", &args);
             print::stringify_segment(segment)
         });
     }
 
-        #[bench]
-    fn nodejs_section_bench(b: &mut Bencher) {
+    #[bench]
+    fn dir_section_bench(b: &mut Bencher) {
         b.iter(|| {
             let args = App::new("starship")
                 .arg(Arg::with_name("status_code"))
                 .get_matches_from(vec!["starship", "0"]);
 
-            let segment = modules::handle("nodejs", &args);
+            let segment = modules::handle("dir", &args);
             print::stringify_segment(segment)
         });
     }
diff --git a/src/main.rs b/src/main.rs
index 63c495820..b8f11cfc9 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,7 +4,6 @@ extern crate clap;
 extern crate ansi_term;
 extern crate dirs;
 extern crate git2;
-extern crate rayon;
 
 mod modules;
 mod print;
diff --git a/src/modules/nodejs.rs b/src/modules/nodejs.rs
index 932709f6d..87a1e4a25 100644
--- a/src/modules/nodejs.rs
+++ b/src/modules/nodejs.rs
@@ -1,13 +1,12 @@
 use super::Segment;
 use ansi_term::{Color, Style};
 use clap::ArgMatches;
-use rayon::prelude::*;
 use std::env;
 use std::fs::{self, DirEntry};
 use std::process::Command;
 
 /// Creates a segment with the current Node.js version
-///
+/// 
 /// Will display the Node.js version if any of the following criteria are met:
 ///     - Current directory contains a `.js` file
 ///     - Current directory contains a `node_modules` directory
@@ -17,13 +16,10 @@ pub fn segment(_: &ArgMatches) -> Segment {
     const SECTION_COLOR: Color = Color::Green;
 
     let current_path = env::current_dir().expect("Unable to identify current directory");
-    let files = fs::read_dir(&current_path)
-        .unwrap()
-        .filter_map(Result::ok)
-        .collect::<Vec<DirEntry>>();
+    let files = fs::read_dir(&current_path).unwrap();
 
     // Early return if there are no JS project files
-    let is_js_project = files.par_iter().any(has_js_files);
+    let is_js_project = files.filter_map(Result::ok).any(has_js_files);
     if !is_js_project {
         return Segment::default();
     }
@@ -42,7 +38,7 @@ pub fn segment(_: &ArgMatches) -> Segment {
     }
 }
 
-fn has_js_files(dir_entry: &DirEntry) -> bool {
+fn has_js_files(dir_entry: DirEntry) -> bool {
     let is_js_file = |d: &DirEntry| -> bool {
         d.path().is_file() && d.path().extension().unwrap_or_default() == "js"
     };
@@ -53,5 +49,5 @@ fn has_js_files(dir_entry: &DirEntry) -> bool {
         d.path().is_file() && d.path().file_name().unwrap_or_default() == "package.json"
     };
 
-    is_js_file(dir_entry) || is_node_modules(dir_entry) || is_package_json(dir_entry)
+    is_js_file(&dir_entry) || is_node_modules(&dir_entry) || is_package_json(&dir_entry)
 }