perf: fast-path Math.pow when exponent is 1 in computeScore

When weight and norm are both 1 (common case with default options),
skip the Math.pow call and use the score directly.

Author: krisk

dist/fuse.basic.cjs

@@ -901,7 +901,9 @@ function computeScoreSingle(matches, {
       score
     } = matches[i];
     const weight = key ? key.weight : null;
-    totalScore *= Math.pow(score === 0 && weight ? Number.EPSILON : score, (weight || 1) * (ignoreFieldNorm ? 1 : norm));
+    const s = score === 0 && weight ? Number.EPSILON : score;
+    const exponent = (weight || 1) * (ignoreFieldNorm ? 1 : norm);
+    totalScore *= exponent === 1 ? s : Math.pow(s, exponent);
   }
   return totalScore;
 }

dist/fuse.basic.min.cjs

@@ -899,7 +899,9 @@ function computeScoreSingle(matches, {
       score
     } = matches[i];
     const weight = key ? key.weight : null;
-    totalScore *= Math.pow(score === 0 && weight ? Number.EPSILON : score, (weight || 1) * (ignoreFieldNorm ? 1 : norm));
+    const s = score === 0 && weight ? Number.EPSILON : score;
+    const exponent = (weight || 1) * (ignoreFieldNorm ? 1 : norm);
+    totalScore *= exponent === 1 ? s : Math.pow(s, exponent);
   }
   return totalScore;
 }

dist/fuse.basic.min.mjs

@@ -1296,7 +1296,9 @@ function computeScoreSingle(matches, {
       score
     } = matches[i];
     const weight = key ? key.weight : null;
-    totalScore *= Math.pow(score === 0 && weight ? Number.EPSILON : score, (weight || 1) * (ignoreFieldNorm ? 1 : norm));
+    const s = score === 0 && weight ? Number.EPSILON : score;
+    const exponent = (weight || 1) * (ignoreFieldNorm ? 1 : norm);
+    totalScore *= exponent === 1 ? s : Math.pow(s, exponent);
   }
   return totalScore;
 }

dist/fuse.basic.mjs

@@ -1294,7 +1294,9 @@ function computeScoreSingle(matches, {
       score
     } = matches[i];
     const weight = key ? key.weight : null;
-    totalScore *= Math.pow(score === 0 && weight ? Number.EPSILON : score, (weight || 1) * (ignoreFieldNorm ? 1 : norm));
+    const s = score === 0 && weight ? Number.EPSILON : score;
+    const exponent = (weight || 1) * (ignoreFieldNorm ? 1 : norm);
+    totalScore *= exponent === 1 ? s : Math.pow(s, exponent);
   }
   return totalScore;
 }

dist/fuse.cjs

@@ -1278,7 +1278,9 @@ function computeScoreSingle(matches, {
       score
     } = matches[i];
     const weight = key ? key.weight : null;
-    totalScore *= Math.pow(score === 0 && weight ? Number.EPSILON : score, (weight || 1) * (ignoreFieldNorm ? 1 : norm));
+    const s = score === 0 && weight ? Number.EPSILON : score;
+    const exponent = (weight || 1) * (ignoreFieldNorm ? 1 : norm);
+    totalScore *= exponent === 1 ? s : Math.pow(s, exponent);
   }
   return totalScore;
 }