blurhash - npm Package Compare versions

Comparing version 1.1.1 to 1.1.2

CHANGELOG.md

 # Changelog
 
+## 1.1.2 (June 29, 2019)
+
+- added `isBlurhashValid()` utility
+
 ## 1.1.1 (June 29, 2019)
 
-* fixed incorrect type declaration path in package.json
-* improved error handling
-
+- fixed incorrect type declaration path in package.json
+- improved error handling

dist/decode.d.ts

@@ -0,2 +1,6 @@
+export declare const isBlurhashValid: (blurhash: string) => {
+    result: boolean;
+    errorReason?: string;
+};
 declare const decode: (blurhash: string, width: number, height: number, punch?: number) => Uint8ClampedArray;
 export default decode;

dist/decode.js

@@ -6,2 +6,26 @@ "use strict";
 var error_1 = require("./error");
+/**
+ * Returns an error message if invalid or undefined if valid
+ * @param blurhash
+ */
+var validateBlurhash = function (blurhash) {
+    if (!blurhash || blurhash.length < 6) {
+        throw new error_1.ValidationError("The blurhash string must be at least 6 characters");
+    }
+    var sizeFlag = base83_1.decode83(blurhash[0]);
+    var numY = Math.floor(sizeFlag / 9) + 1;
+    var numX = (sizeFlag % 9) + 1;
+    if (blurhash.length !== 4 + 2 * numX * numY) {
+        throw new error_1.ValidationError("blurhash length mismatch: length is " + blurhash.length + " but it should be " + (4 + 2 * numX * numY));
+    }
+};
+exports.isBlurhashValid = function (blurhash) {
+    try {
+        validateBlurhash(blurhash);
+    }
+    catch (error) {
+        return { result: false, errorReason: error.message };
+    }
+    return { result: true };
+};
 var decodeDC = function (value) {
@@ -25,6 +49,4 @@ var intR = value >> 16;
 var decode = function (blurhash, width, height, punch) {
+    validateBlurhash(blurhash);
     punch = punch | 1;
-    if (blurhash.length < 6) {
-        throw new error_1.ValidationError("The blurhash string must be at least 6 characters");
-    }
     var sizeFlag = base83_1.decode83(blurhash[0]);
@@ -35,6 +57,2 @@ var numY = Math.floor(sizeFlag / 9) + 1;
     var maximumValue = (quantisedMaximumValue + 1) / 166;
-    if (blurhash.length !== 4 + 2 * numX * numY) {
-        throw new error_1.ValidationError("blurhash length mismatch: length is " + blurhash.length + " but it should be " + (4 + 2 * numX * numY));
-        return null;
-    }
     var colors = new Array(numX * numY);
@@ -41,0 +59,0 @@ for (var i = 0; i < colors.length; i++) {

dist/index.d.ts

@@ -1,3 +0,3 @@
-export { default as decode } from "./decode";
+export { default as decode, isBlurhashValid } from "./decode";
 export { default as encode } from "./encode";
 export * from "./error";

dist/index.js

@@ -8,2 +8,3 @@ "use strict";
 exports.decode = decode_1.default;
+exports.isBlurhashValid = decode_1.isBlurhashValid;
 var encode_1 = require("./encode");
@@ -10,0 +11,0 @@ exports.encode = encode_1.default;

package.json

 {
   "name": "blurhash",
-  "version": "1.1.1",
+  "version": "1.1.2",
   "description": "Encoder and decoder for the Wolt BlurHash algorithm.",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

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Native code

Supply chain risk

Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

Found 1 instance in 1 package

Fixed alerts

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New author

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A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

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Improved metrics

Total package byte prevSize

31392

increased by31.08%

Number of package files

24

increased by4.35%

Lines of code

389

increased by6.28%

No dependency changes