pref: change detectors from .match into .test

there is no need for matching, capturing results, and validating nullablity
just using `.test` would be enough and significantly faster

for more info, see https://stackoverflow.com/10940138/16476610

packages/mermaid-example-diagram/src/detector.ts

@@ -3,7 +3,7 @@ import type { ExternalDiagramDefinition } from 'mermaid';
 const id = 'example-diagram';
 
 const detector = (txt: string) => {
-  return txt.match(/^\s*example-diagram/) !== null;
+  return /^\s*example-diagram/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid-zenuml/src/detector.ts

@@ -1,10 +1,9 @@
 import type { ExternalDiagramDefinition } from 'mermaid';
 
 const id = 'zenuml';
-const regexp = /^\s*zenuml/;
 
 const detector = (txt: string) => {
-  return txt.match(regexp) !== null;
+  return /^\s*zenuml/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/c4/c4Detector.ts

@@ -3,7 +3,7 @@ import type { ExternalDiagramDefinition } from '../../diagram-api/types.js';
 const id = 'c4';
 
 const detector = (txt: string) => {
-  return txt.match(/^\s*C4Context|C4Container|C4Component|C4Dynamic|C4Deployment/) !== null;
+  return /^\s*C4Context|C4Container|C4Component|C4Dynamic|C4Deployment/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/class/classDetector-V2.ts

@@ -4,14 +4,11 @@ const id = 'classDiagram';
 
 const detector: DiagramDetector = (txt, config) => {
   // If we have configured to use dagre-wrapper then we should return true in this function for classDiagram code thus making it use the new class diagram
-  if (
+  if (/^\s*classDiagram/.test(txt) && config?.class?.defaultRenderer === 'dagre-wrapper') {
-    txt.match(/^\s*classDiagram/) !== null &&
-    config?.class?.defaultRenderer === 'dagre-wrapper'
-  ) {
     return true;
   }
   // We have not opted to use the new renderer so we should return true if we detect a class diagram
-  return txt.match(/^\s*classDiagram-v2/) !== null;
+  return /^\s*classDiagram-v2/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/class/classDetector.ts

@@ -8,7 +8,7 @@ const detector: DiagramDetector = (txt, config) => {
     return false;
   }
   // We have not opted to use the new renderer so we should return true if we detect a class diagram
-  return txt.match(/^\s*classDiagram/) !== null;
+  return /^\s*classDiagram/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/er/erDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'er';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*erDiagram/) !== null;
+  return /^\s*erDiagram/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/flowchart/elk/detector.ts

@@ -6,9 +6,9 @@ const id = 'flowchart-elk';
 const detector: DiagramDetector = (txt: string, config?: MermaidConfig): boolean => {
   if (
     // If diagram explicitly states flowchart-elk
-    txt.match(/^\s*flowchart-elk/) ||
+    /^\s*flowchart-elk/.test(txt) ||
     // If a flowchart/graph diagram has their default renderer set to elk
-    (txt.match(/^\s*flowchart|graph/) && config?.flowchart?.defaultRenderer === 'elk')
+    (/^\s*flowchart|graph/.test(txt) && config?.flowchart?.defaultRenderer === 'elk')
   ) {
     return true;
   }

packages/mermaid/src/diagrams/flowchart/flowDetector-v2.ts

@@ -12,10 +12,10 @@ const detector: DiagramDetector = (txt, config) => {
   }
 
   // If we have configured to use dagre-wrapper then we should return true in this function for graph code thus making it use the new flowchart diagram
-  if (txt.match(/^\s*graph/) !== null && config?.flowchart?.defaultRenderer === 'dagre-wrapper') {
+  if (/^\s*graph/.test(txt) && config?.flowchart?.defaultRenderer === 'dagre-wrapper') {
     return true;
   }
-  return txt.match(/^\s*flowchart/) !== null;
+  return /^\s*flowchart/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/flowchart/flowDetector.ts

@@ -11,7 +11,7 @@ const detector: DiagramDetector = (txt, config) => {
   ) {
     return false;
   }
-  return txt.match(/^\s*graph/) !== null;
+  return /^\s*graph/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/gantt/ganttDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'gantt';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*gantt/) !== null;
+  return /^\s*gantt/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/git/gitGraphDetector.ts

@@ -4,7 +4,7 @@ import type { ExternalDiagramDefinition } from '../../diagram-api/types.js';
 const id = 'gitGraph';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*gitGraph/) !== null;
+  return /^\s*gitGraph/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/info/infoDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'info';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*info/) !== null;
+  return /^\s*info/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/mindmap/detector.ts

@@ -2,7 +2,7 @@ import type { ExternalDiagramDefinition } from '../../diagram-api/types.js';
 const id = 'mindmap';
 
 const detector = (txt: string) => {
-  return txt.match(/^\s*mindmap/) !== null;
+  return /^\s*mindmap/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/pie/pieDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'pie';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*pie/) !== null;
+  return /^\s*pie/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/quadrant-chart/quadrantDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'quadrantChart';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*quadrantChart/) !== null;
+  return /^\s*quadrantChart/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/requirement/requirementDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'requirement';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*requirement(Diagram)?/) !== null;
+  return /^\s*requirement(Diagram)?/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/sequence/sequenceDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'sequence';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*sequenceDiagram/) !== null;
+  return /^\s*sequenceDiagram/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/state/stateDetector-V2.ts

@@ -2,14 +2,11 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 
 const id = 'stateDiagram';
 
-const detector: DiagramDetector = (text, config) => {
+const detector: DiagramDetector = (txt, config) => {
-  if (text.match(/^\s*stateDiagram-v2/) !== null) {
+  if (/^\s*stateDiagram-v2/.test(txt)) {
     return true;
   }
-  if (text.match(/^\s*stateDiagram/) && config?.state?.defaultRenderer === 'dagre-wrapper') {
+  if (/^\s*stateDiagram/.test(txt) && config?.state?.defaultRenderer === 'dagre-wrapper') {
-    return true;
-  }
-  if (text.match(/^\s*stateDiagram/) && config?.state?.defaultRenderer === 'dagre-wrapper') {
     return true;
   }
   return false;

packages/mermaid/src/diagrams/state/stateDetector.ts

@@ -8,7 +8,7 @@ const detector: DiagramDetector = (txt, config) => {
   if (config?.state?.defaultRenderer === 'dagre-wrapper') {
     return false;
   }
-  return txt.match(/^\s*stateDiagram/) !== null;
+  return /^\s*stateDiagram/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/timeline/detector.ts

@@ -3,7 +3,7 @@ import type { ExternalDiagramDefinition } from '../../diagram-api/types.js';
 const id = 'timeline';
 
 const detector = (txt: string) => {
-  return txt.match(/^\s*timeline/) !== null;
+  return /^\s*timeline/.test(txt);
 };
 
 const loader = async () => {

packages/mermaid/src/diagrams/user-journey/journeyDetector.ts

@@ -3,7 +3,7 @@ import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-a
 const id = 'journey';
 
 const detector: DiagramDetector = (txt) => {
-  return txt.match(/^\s*journey/) !== null;
+  return /^\s*journey/.test(txt);
 };
 
 const loader = async () => {