Add prettier, format code

.prettierignore

@@ -0,0 +1,3 @@
+node_modules
+dist
+coverage

.prettierrc.json

@@ -0,0 +1,9 @@
+{
+  "printWidth": 100,
+  "singleQuote": true,
+  "bracketSpacing": true,
+  "semi": true,
+  "arrowParens": "always",
+  "endOfLine": "lf",
+  "trailingComma": "all"
+}

README.md

@@ -10,24 +10,26 @@ Derived from the sample CRC implementation in the PNG specification: http://www.
 This package requires Node 8+ to work.
 
 # install
+
 ```
 npm install buffer-crc32
 ```
 
 # example
+
 ```js
 var crc32 = require('buffer-crc32');
 // works with buffers
-var buf = Buffer([0x00, 0x73, 0x75, 0x70, 0x20, 0x62, 0x72, 0x6f, 0x00])
-crc32(buf) // -> <Buffer 94 5a ab 4a>
+var buf = Buffer([0x00, 0x73, 0x75, 0x70, 0x20, 0x62, 0x72, 0x6f, 0x00]);
+crc32(buf); // -> <Buffer 94 5a ab 4a>
 
 // has convenience methods for getting signed or unsigned ints
-crc32.signed(buf) // -> -1805997238
-crc32.unsigned(buf) // -> 2488970058
+crc32.signed(buf); // -> -1805997238
+crc32.unsigned(buf); // -> 2488970058
 
 // will cast to buffer if given a string, so you can
 // directly use foreign characters safely
-crc32('自動販売機') // -> <Buffer cb 03 1a c5>
+crc32('自動販売機'); // -> <Buffer cb 03 1a c5>
 
 // and works in append mode too
 var partialCrc = crc32('hey');
@@ -38,12 +40,15 @@ var finalCrc = crc32('bros', partialCrc); // -> <Buffer 47 fa 55 70>
 ```
 
 # tests
+
 This was tested against the output of zlib's crc32 method. You can run
 the tests with`npm test` (requires tap)
 
 # see also
+
 https://github.com/alexgorbatchev/node-crc, `crc.buffer.crc32` also
 supports buffer inputs and return unsigned ints (thanks @tjholowaychuk).
 
 # license
+
 MIT/X11

index.js

@@ -1,72 +1,49 @@
 const CRC_TABLE = new Int32Array([
-  0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
-  0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
-  0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
-  0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
-  0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
-  0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
-  0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
-  0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
-  0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
-  0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
-  0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
-  0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
-  0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
-  0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
-  0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
-  0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
-  0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
-  0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
-  0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
-  0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
-  0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
-  0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
-  0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
-  0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
-  0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
-  0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
-  0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
-  0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
-  0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
-  0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
-  0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
-  0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
-  0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
-  0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
-  0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
-  0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
-  0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
-  0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
-  0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
-  0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
-  0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
-  0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
-  0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
-  0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
-  0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
-  0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
-  0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
-  0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
-  0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
-  0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
-  0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
-  0x2d02ef8d
-])
+  0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+  0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+  0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+  0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+  0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+  0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+  0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+  0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+  0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+  0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+  0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+  0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+  0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+  0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+  0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+  0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+  0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+  0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+  0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+  0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+  0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+  0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+  0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+  0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+  0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+  0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+  0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+  0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+  0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+  0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+  0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+  0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
+]);
 
 function ensureBuffer(input) {
   if (Buffer.isBuffer(input)) {
     return input;
   }
 
-  if (typeof input === "number") {
+  if (typeof input === 'number') {
     return Buffer.alloc(input);
-  }
-  else if (typeof input === "string") {
+  } else if (typeof input === 'string') {
     return Buffer.from(input);
-  }
-  else {
-    throw new Error("input must be buffer, number, or string, received " +
-                    typeof input);
+  } else {
+    throw new Error('input must be buffer, number, or string, received ' + typeof input);
   }
 }
 
@@ -85,7 +62,7 @@ function _crc32(buf, previous) {
   for (var n = 0; n < buf.length; n++) {
     crc = CRC_TABLE[(crc ^ buf[n]) & 0xff] ^ (crc >>> 8);
   }
-  return (crc ^ -1);
+  return crc ^ -1;
 }
 
 function crc32() {

package.json

@@ -22,11 +22,13 @@
   },
   "main": "index.js",
   "scripts": {
-    "test": "tap tests/*.test.js --reporter classic"
+    "test": "tap tests/*.test.js --reporter classic",
+    "format": "prettier --write --log-level warn \"**/*.{json,md,js}\""
   },
   "type": "commonjs",
   "dependencies": {},
   "devDependencies": {
+    "prettier": "^3.2.4",
     "tap": "~11.1.5"
   },
   "optionalDependencies": {},

tests/crc.test.js

@@ -50,9 +50,14 @@ test('can do unsigned', function (t) {
   t.end();
 });
 
-
 test('simple crc32 in append mode', function (t) {
-  var input = [Buffer.from('hey'), Buffer.from(' '), Buffer.from('sup'), Buffer.from(' '), Buffer.from('bros')];
+  var input = [
+    Buffer.from('hey'),
+    Buffer.from(' '),
+    Buffer.from('sup'),
+    Buffer.from(' '),
+    Buffer.from('bros'),
+  ];
   var expected = Buffer.from([0x47, 0xfa, 0x55, 0x70]);
   for (var crc = 0, i = 0; i < input.length; i++) {
     crc = crc32(input[i], crc);
@@ -61,7 +66,6 @@ test('simple crc32 in append mode', function (t) {
   t.end();
 });
 
-
 test('can do signed in append mode', function (t) {
   var input1 = 'ham';
   var input2 = ' ';
@@ -80,7 +84,7 @@ test('make sure crc32 can accept integers as first arg ', function (t) {
   try {
     t.same(crc32(0), Buffer.from([0x00, 0x00, 0x00, 0x00]));
   } catch (e) {
-    t.fail("should be able to accept integer");
+    t.fail('should be able to accept integer');
   } finally {
     t.end();
   }
@@ -89,9 +93,9 @@ test('make sure crc32 can accept integers as first arg ', function (t) {
 test('make sure crc32 throws on bad input', function (t) {
   try {
     crc32({});
-    t.fail("should fail on garbage input");
+    t.fail('should fail on garbage input');
   } catch (e) {
-    t.ok("should pass");
+    t.ok('should pass');
   } finally {
     t.end();
   }