Node.js solution for week 90/part 1.

2 files changed, 18 insertions, 0 deletions

diff --git a/challenge-090/abigail/README.md b/challenge-090/abigail/README.md
index cbe7b078ae..546ac5f46d 100644
--- a/challenge-090/abigail/README.md
+++ b/challenge-090/abigail/README.md
@@ -29,6 +29,7 @@ To get the complementary sequence use the following mapping:
 * [bash/sh](bash/ch-1.sh)
 * [Befunge-93](befunge-93/ch-1.bf93)
 * [C](c/ch-1.c)
+* [Node.js](node/ch-1.js)
 * [Perl](perl/ch-1.pl)
 * [SQL (SQLite)](sql/ch-1.sql) ([Table definition](sql/ch-1.table))
 
diff --git a/challenge-090/abigail/node/ch-1.js b/challenge-090/abigail/node/ch-1.js
new file mode 100644
index 0000000000..daa70eab68
--- /dev/null
+++ b/challenge-090/abigail/node/ch-1.js
@@ -0,0 +1,17 @@
+//
+// Read STDIN. Split on newlines
+//
+  require      ("fs")
+. readFileSync (0)               // Read all.
+. toString     ()                // Turn it into a string.
+. split        ("\n")            // Split on newlines.
+. filter       (_ => _ . length) // Filter out empty lines.
+. map          (_ => {
+    process . stdout . write (_ . length + "\n" +
+                              _ . replace (/A/g, 'x')
+                                . replace (/T/g, 'A')
+                                . replace (/x/g, 'T')
+                                . replace (/G/g, 'y')
+                                . replace (/C/g, 'G')
+                                . replace (/y/g, 'C') + "\n")
+});