gdate-julian - npm Package Compare versions

Comparing version 1.0.0 to 1.0.1

package.json

 {
   "name": "gdate-julian",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Converts date to and from julian days in gLib GDate style",
-  "main": "src/index.js",
+  "main": "./src/index.js",
+  "types": "./src/index.d.ts",
   "scripts": {
@@ -45,2 +46,5 @@ "test": "jest"
   ],
+  "engines": {
+    "node": ">= 6"
+  },
   "author": "George Kotchlamazashvili <[e-mail]>",
@@ -53,4 +57,4 @@ "license": "MIT",
   "devDependencies": {
-    "jest": "^23.6.0"
+    "jest": "^25.1.0"
   }
 }

src/g_julian_days_to_date.js

@@ -0,1 +1,4 @@
+const mkJDate = require('./_make_julian_date')
+const t = Math.trunc
+
 const g_julian_days_to_date = (julian_days) => {
@@ -11,26 +14,15 @@ /* Formula taken from the Calendar FAQ; the formula was for the
   const A = julian_days + 1721425 + 32045;
-  const B = Math.trunc(Math.trunc(4 * (A + 36524)) / 146097) - 1;
-  const C = A - Math.trunc(Math.trunc(146097 * B) / 4);
-  const D = Math.trunc(Math.trunc(4 * (C + 365)) / 1461) - 1;
-  const E = C - Math.trunc(Math.trunc(1461 * D) / 4);
-  const M = Math.trunc((Math.trunc(5 * (E - 1)) + 2) / 153);
+  const B = t(t(4 * (A + 36524)) / 146097) - 1;
+  const C = A - t(t(146097 * B) / 4);
+  const D = t(t(4 * (C + 365)) / 1461) - 1;
+  const E = C - t(t(1461 * D) / 4);
+  const M = t((t(5 * (E - 1)) + 2) / 153);
 
-  const m = M + 3 - Math.trunc(12 * Math.trunc(M / 10));
-  const day = E - Math.trunc((Math.trunc(153 * M) + 2) / 5);
-  const y = Math.trunc(100 * B) + D - 4800 + Math.trunc(M / 10);
+  const m = M + 3 - t(12 * t(M / 10));
+  const day = E - t((t(153 * M) + 2) / 5);
+  const y = t(100 * B) + D - 4800 + t(M / 10);
 
-  const dt = new Date
-  dt.setUTCFullYear(y)
-  dt.setUTCMonth(m - 1)
-  dt.setUTCDate(day)
-
-  //TODO: the hours part could be calculated based on the remaining fraction
-  dt.setUTCHours(12)
-  dt.setUTCMinutes(0)
-  dt.setUTCSeconds(0)
-  dt.setUTCMilliseconds(0)
-
-  return dt
+  return mkJDate(y, m - 1, day)
 }
 
 module.exports = g_julian_days_to_date

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Improved metrics

Total package byte prevSize

4692

increased by9.78%

Number of package files

7

increased by16.67%

Lines of code

93

increased by17.72%

No dependency changes