geohash-poly - npm Package Compare versions

Comparing version 0.1.0 to 0.1.2

index.js

@@ -26,7 +26,20 @@ var Readable = require('stream').Readable,
  */
-var Hasher = function (geoJSONCoords, precision) {
-  this.isMulti = Array.isArray(geoJSONCoords[0][0][0]);
-  this.geojson = !this.isMulti ? [geoJSONCoords] : geoJSONCoords;
-  this.precision = precision;
-  Readable.call(this);
+var Hasher = function (options) {
+  var defaults = {
+    precision: 6,
+    rowMode: false,
+    geojson: []
+  }
+  options = options || {};
+  for (var attrname in defaults) {
+    this[attrname] = options.hasOwnProperty(attrname) && (options[attrname] !== null && typeof options[attrname] !== 'undefined') ? options[attrname] : defaults[attrname];
+  }
+
+  this.isMulti = Array.isArray(this.geojson[0][0][0]);
+  this.geojson = !this.isMulti ? [this.geojson] : this.geojson;
+  this.buffer = [];
+
+  Readable.call(this, {
+    objectMode: this.rowMode
+  });
 }
@@ -43,11 +56,21 @@ util.inherits(Hasher, Readable);
 Hasher.prototype._read = function (size) {
-  if(!this.geojson.length) return this.push(null);
+  // still some hashes in the buffer, no rush.
+  if(this.buffer.length) {
+    return this.push(this.buffer.shift());
+  }
 
-  var hashes = this.getNextRow();
+  var hashes = [];
 
-  if(!hashes.length) return this.push('');
+  // Iterate over the poly rows until we get some hashes, or the polys are done.
+  while(this.geojson.length && !hashes.length) {
+    hashes = this.getNextRow();
+  }
+
+  if(!this.geojson.length && !hashes.length) return this.push(null);
+  if(this.rowMode) return this.push(hashes);
+
   while(hashes.length) {
     this.push(hashes.shift());
   }
-
+  this.buffer = this.buffer.concat(hashes);
 };
@@ -94,4 +117,8 @@
  */
-module.exports.stream = function (geoJSONCoords, precision) {
-  return new Hasher(geoJSONCoords, precision);
+module.exports.stream = function (geoJSONCoords, precision, rowMode) {
+  return new Hasher({
+    geojson: geoJSONCoords,
+    precision: precision,
+    rowMode: rowMode ? true : false
+  });
 };
@@ -104,3 +131,6 @@
 module.exports.sync = function (geoJSONCoords, precision) {
-  var hasher = new Hasher(geoJSONCoords, precision);
+  var hasher = new Hasher({
+    geojson: geoJSONCoords,
+    precision: precision
+  });
   var results = [];
@@ -107,0 +137,0 @@

package.json

 {
   "name": "geohash-poly",
-  "version": "0.1.0",
+  "version": "0.1.2",
   "description": "Transform a GeoJSON Polygon or MultiPolygon to a list of geohashes that form it.",
@@ -5,0 +5,0 @@ "main": "index.js",

README.md

@@ -14,2 +14,5 @@ # Geohash-poly
 Hashes can be streamed. Each _read will generate a row of hashes into buffer, as some form of throttling. This allows massive polygons with high precision hashes to avoid memory constraint issues. If your polys have the potential to hit memory issues, use this method.
+
+If you specify rowMode as true, such as `.stream(poly, precision, rowMode)`, each chunk in the stream will be an array using streams2 objectMode.
+
 ```javascript
@@ -16,0 +19,0 @@

Fixed alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Minified code

Quality

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

139262

increased by3.39%

Lines of code

630

increased by9.19%

Number of low quality alerts

2

decreased by-33.33%

Number of lines in readme file

56

increased by5.66%

Number of medium supply chain risk alerts

0

decreased by-100%

No dependency changes