[ML] Removing use of re2 library (elastic#186104)

We no longer need to use `re2` over the standard regex library.

(cherry picked from commit ed70d4c)

# Conflicts:
#	x-pack/plugins/ml/server/saved_objects/initialization/space_overrides/logs.ts
#	x-pack/plugins/ml/server/saved_objects/initialization/space_overrides/metrics.ts
#	x-pack/plugins/ml/server/saved_objects/service.ts

x-pack/plugins/ml/server/saved_objects/initialization/space_overrides/logs.ts

@@ -6,7 +6,6 @@
  */
 
 import { IScopedClusterClient } from 'kibana/server';
-import RE2 from 're2';
 import { mlLog } from '../../../lib/log';
 import { Job } from '../../../../common/types/anomaly_detection_jobs';
 
@@ -43,7 +42,7 @@ export async function logJobsSpaces({
 }
 
 function findLogJobSpaceFactory() {
-  const reg = new RE2(`${MODULE_PREFIX}-(.+)-(${SOURCES.join('|')})-(${JOB_IDS.join('|')})`);
+  const reg = new RegExp(`${MODULE_PREFIX}-(.+)-(${SOURCES.join('|')})-(${JOB_IDS.join('|')})`);
 
   return (jobId: string) => {
     const result = reg.exec(jobId);
@@ -52,4 +51,4 @@ function findLogJobSpaceFactory() {
     }
     return result[1] ?? null;
   };
-}
+}

x-pack/plugins/ml/server/saved_objects/initialization/space_overrides/metrics.ts

@@ -6,7 +6,6 @@
  */
 
 import { IScopedClusterClient } from 'kibana/server';
-import RE2 from 're2';
 import { mlLog } from '../../../lib/log';
 import { Job } from '../../../../common/types/anomaly_detection_jobs';
 
@@ -50,7 +49,7 @@ export async function metricsJobsSpaces({
 }
 
 function findMetricsJobSpaceFactory() {
-  const reg = new RE2(`${MODULE_PREFIX}-(.+)-(${SOURCES.join('|')})-(${JOB_IDS.join('|')})`);
+  const reg = new RegExp(`${MODULE_PREFIX}-(.+)-(${SOURCES.join('|')})-(${JOB_IDS.join('|')})`);
 
   return (jobId: string) => {
     const result = reg.exec(jobId);
@@ -59,4 +58,4 @@ function findMetricsJobSpaceFactory() {
     }
     return result[1] ?? null;
   };
-}
+}

x-pack/plugins/ml/server/saved_objects/service.ts

@@ -5,7 +5,6 @@
  * 2.0.
  */
 
-import RE2 from 're2';
 import {
   KibanaRequest,
   SavedObjectsClientContract,
@@ -281,7 +280,7 @@ export function jobSavedObjectServiceFactory(
       if (id.match('\\*') === null) {
         return jobIds.includes(id);
       }
-      const regex = new RE2(id.replace('*', '.*'));
+      const regex = new RegExp(id.replace('*', '.*'));
       return jobIds.some((jId) => typeof jId === 'string' && regex.exec(jId));
     });
   }
@@ -413,4 +412,4 @@ function createSavedObjectFilter(filterObject: JobObjectFilter) {
     })
     .join(' AND ');
   return { filter, searchFields };
-}
+}