diff --git a/exercises/practice/acronym/.gitignore b/exercises/practice/acronym/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/acronym/.gitignore
+++ b/exercises/practice/acronym/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/all-your-base/.gitignore b/exercises/practice/all-your-base/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/all-your-base/.gitignore
+++ b/exercises/practice/all-your-base/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/allergies/.gitignore b/exercises/practice/allergies/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/allergies/.gitignore
+++ b/exercises/practice/allergies/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/anagram/.gitignore b/exercises/practice/anagram/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/anagram/.gitignore
+++ b/exercises/practice/anagram/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/armstrong-numbers/.gitignore b/exercises/practice/armstrong-numbers/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/armstrong-numbers/.gitignore
+++ b/exercises/practice/armstrong-numbers/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/atbash-cipher/.gitignore b/exercises/practice/atbash-cipher/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/atbash-cipher/.gitignore
+++ b/exercises/practice/atbash-cipher/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/binary-search-tree/.gitignore b/exercises/practice/binary-search-tree/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/binary-search-tree/.gitignore
+++ b/exercises/practice/binary-search-tree/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/binary-search/.gitignore b/exercises/practice/binary-search/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/binary-search/.gitignore
+++ b/exercises/practice/binary-search/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/bob/.gitignore b/exercises/practice/bob/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/bob/.gitignore
+++ b/exercises/practice/bob/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/change/.gitignore b/exercises/practice/change/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/change/.gitignore
+++ b/exercises/practice/change/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/difference-of-squares/.gitignore b/exercises/practice/difference-of-squares/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/difference-of-squares/.gitignore
+++ b/exercises/practice/difference-of-squares/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/eliuds-eggs/.gitignore b/exercises/practice/eliuds-eggs/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/eliuds-eggs/.gitignore
+++ b/exercises/practice/eliuds-eggs/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/flower-field/.gitignore b/exercises/practice/flower-field/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/flower-field/.gitignore
+++ b/exercises/practice/flower-field/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/hello-world/.gitignore b/exercises/practice/hello-world/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/hello-world/.gitignore
+++ b/exercises/practice/hello-world/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/isogram/.gitignore b/exercises/practice/isogram/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/isogram/.gitignore
+++ b/exercises/practice/isogram/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/leap/.gitignore b/exercises/practice/leap/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/leap/.gitignore
+++ b/exercises/practice/leap/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/matching-brackets/.gitignore b/exercises/practice/matching-brackets/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/matching-brackets/.gitignore
+++ b/exercises/practice/matching-brackets/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/pangram/.gitignore b/exercises/practice/pangram/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/pangram/.gitignore
+++ b/exercises/practice/pangram/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/phone-number/.gitignore b/exercises/practice/phone-number/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/phone-number/.gitignore
+++ b/exercises/practice/phone-number/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/prism/.gitignore b/exercises/practice/prism/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/prism/.gitignore
+++ b/exercises/practice/prism/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/protein-translation/.gitignore b/exercises/practice/protein-translation/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/protein-translation/.gitignore
+++ b/exercises/practice/protein-translation/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/raindrops/.gitignore b/exercises/practice/raindrops/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/raindrops/.gitignore
+++ b/exercises/practice/raindrops/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/resistor-color-duo/.gitignore b/exercises/practice/resistor-color-duo/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/resistor-color-duo/.gitignore
+++ b/exercises/practice/resistor-color-duo/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/resistor-color-trio/.gitignore b/exercises/practice/resistor-color-trio/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/resistor-color-trio/.gitignore
+++ b/exercises/practice/resistor-color-trio/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/resistor-color/.gitignore b/exercises/practice/resistor-color/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/resistor-color/.gitignore
+++ b/exercises/practice/resistor-color/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/rna-transcription/.gitignore b/exercises/practice/rna-transcription/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/rna-transcription/.gitignore
+++ b/exercises/practice/rna-transcription/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/roman-numerals/.gitignore b/exercises/practice/roman-numerals/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/roman-numerals/.gitignore
+++ b/exercises/practice/roman-numerals/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/rotational-cipher/.gitignore b/exercises/practice/rotational-cipher/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/rotational-cipher/.gitignore
+++ b/exercises/practice/rotational-cipher/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/run-length-encoding/.gitignore b/exercises/practice/run-length-encoding/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/run-length-encoding/.gitignore
+++ b/exercises/practice/run-length-encoding/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/space-age/.gitignore b/exercises/practice/space-age/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/space-age/.gitignore
+++ b/exercises/practice/space-age/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/strain/.gitignore b/exercises/practice/strain/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/strain/.gitignore
+++ b/exercises/practice/strain/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/two-fer/.gitignore b/exercises/practice/two-fer/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/two-fer/.gitignore
+++ b/exercises/practice/two-fer/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/exercises/practice/word-count/.gitignore b/exercises/practice/word-count/.gitignore
index f90a88d..c164665 100644
--- a/exercises/practice/word-count/.gitignore
+++ b/exercises/practice/word-count/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib
diff --git a/templates/.gitignore b/templates/.gitignore
index f90a88d..c164665 100644
--- a/templates/.gitignore
+++ b/templates/.gitignore
@@ -1,2 +1,3 @@
 node_modules
-**/*.res.js
\ No newline at end of file
+**/*.res.js
+lib