Javascript code runner

- runs the code for the latest day by default
- if passed int, runs that day's code
- if passed "all" runs all the days
- fixed day 4+6 for crlf issues
- ensured \n endings present in all js files

Author: OrangeBacon

js/day01.js

@@ -10,4 +10,4 @@ console.log(
             a.map((t,k)=>n+s+t==2020&&k>j&&j>i?n*s*t:0)
                 .reduce((p,v)=>p+v)])
         .reduce((p,v)=>[p[0]+v[0],p[1]+v[1]],[0,0]))
-    .reduce((p,v)=>[p[0]+v[0],p[1]+v[1]],[0,0]));
+    .reduce((p,v)=>[p[0]+v[0],p[1]+v[1]],[0,0]));

js/day02.js

@@ -7,4 +7,4 @@ console.log(
     .map(x=>[+x[1], +x[2], x[3], x[4].split('')])
     .map((x, i)=>(i = x[3].reduce((a,v)=>(v == x[2] ? a + 1 : a), 0),
         [i>=x[0]&&i<=x[1], (x[3][x[0]-1] == x[2]) ^ (x[3][x[1]-1] == x[2])]))
-    .reduce((a,v)=>[a[0]+v[0],a[1]+v[1]],[0,0]));
+    .reduce((a,v)=>[a[0]+v[0],a[1]+v[1]],[0,0]));

js/day03.js

@@ -6,4 +6,5 @@ console.log(
             .split("\r\n")
             .filter(x=>x.length>0)
             .map(x=>x.split(''))
-            .reduce((p,c,i)=>[(i%x[1]==0)?(c[p[1]]=='#')+p[0]:p[0],(i%x[1]==0)?(p[1]+x[0])%c.length:p[1]],[0,0])[0],1)));
+            .reduce((p,c,i)=>[(i%x[1]==0)?(c[p[1]]=='#')+p[0]:p[0],(i%x[1]==0)?(p[1]+x[0])%c.length:p[1]],[0,0])[0],1)));
+            

js/day04.js

@@ -1,8 +1,8 @@
 console.log(
     require('fs')
     .readFileSync('data/day4.txt', 'utf-8')
-    .split("\n\n")
-    .map(x=>x.split(/[ \n]/).map(x=>x.split(':')))
+    .split(/(\r?\n){2}/)
+    .map(x=>x.split(/[ \n]/).map(x=>x.trim().split(':')))
     .filter(x=>x.length==8-!x.some(y=>y[0]=="cid"))
     .reduce(([a,b],x)=>[a+1, b+x.map(([k,v])=>
         ({byr:/19[2-9][0-9]|200[0-2]/,
@@ -12,4 +12,4 @@ console.log(
         hcl:/#[0-9a-f]{6}/,
         ecl:/amb|blu|brn|gry|grn|hzl|oth/,
         pid:/^[0-9]{9}$/,
-        cid:/.*/})[k]?.test(v)?1:0).reduce((a,b)=>a&b)],[0,0]));
+        cid:/.*/})[k]?.test(v)?1:0).reduce((a,b)=>a&b)],[0,0]));

js/day05.js

@@ -1,8 +1,8 @@
 console.log(
     require("fs")
-    .readFileSync("data/BigBigDay5.txt", "utf-8")
+    .readFileSync("data/day5.txt", "utf-8")
     .trim()
     .split("\n")
     .map(x=>parseInt(x.trim().replace(/[FBLR]/g,x=>+"BR".includes(x)),2))
     .sort((a,b)=>a-b)
-    .reduce(([p,m],v)=>[v,v-p-2?m:v-1],[]));
+    .reduce(([p,m],v)=>[v,v-p-2?m:v-1],[]));

js/day06.js

@@ -1,8 +1,8 @@
 console.log(
     require("fs")
     .readFileSync("data/day6.txt", "utf-8")
-    .split("\n\n")
+    .split(/(\r?\n){2}/)
     .map(x=>x.trim().split("\n").map(x=>x.split('')))
     .map(x=>[x.reduce((a,x)=>new Set([...a,...x]),new Set()),x.map(x=>new Set(x))])
     .map(([a,b])=>[a.size,b.reduce((a,b)=>new Set([...a].filter(x =>b.has(x))),b[0]).size])
-    .reduce(([a,b],[c,d])=>[a+c,b+d],[0,0]));
+    .reduce(([a,b],[c,d])=>[a+c,b+d],[0,0]));

js/day08.js

@@ -13,4 +13,3 @@ console.log(
     d,d]).map((x,i,[f])=>i==0?0:i==1?f(x)[0]:x.map((_,i,a,j=JSON)=>
         f(x=j.parse(j.stringify(a)),y=x[i][0],x[i][0]=y==0?y:y==1?2:1))
         .filter(([_,b])=>!b)[0][0]).slice(1));
-

js/run.js

@@ -0,0 +1,8 @@
+console.log((
+    m=process.hrtime.bigint,t=m(),f=i=>`js/day${i>8?i+1:"0"+(i+1)}.js`,
+    z=require("fs"),r=(x=Array(25).fill(0).map((_,i)=>[i+1,z.existsSync(f(i))])
+    .filter(([i,x])=>x).map(([x])=>x),p=process.argv,l=x.length-1,g=p.length,
+    s="Day number too ",g==2?[x[l]]:g!=3?"Too many args":p[2]=="all"?x:(n=+p[2]
+    ,isNaN(n)?s+"non-numeric":n>l+1?s+"large":n<1?s+"small":[n])),typeof r==
+    "string"?r:r.forEach(e=>eval(z.readFileSync(f(e-1),"utf-8"))),
+    (Number(m()-t)*1e-9).toFixed(7)+"s"))