improve bundle + add examples

2025-08-30 09:10:42 +02:00 · 2025-03-11 20:57:10 +01:00
parent bf86d833be
commit 3d7db8526e
116 changed files with 2841 additions and 1014 deletions
--- a/example/nodejs-document/commonjs/index.js
+++ b/example/nodejs-document/commonjs/index.js
@@ -0,0 +1,49 @@
+const { Document, Charset } = require("flexsearch");
+const fs = require("fs");
+
+// loading test data
+const data = JSON.parse(fs.readFileSync(__dirname + "/../data.json", "utf8"));
+
+// create the document index
+const document = new Document({
+    document: {
+        id: "tconst",
+        store: true,
+        index: [{
+            field: "primaryTitle",
+            tokenize: "forward",
+            encoder: Charset.LatinSimple
+        },{
+            field: "originalTitle",
+            tokenize: "forward",
+            encoder: Charset.LatinSimple
+        }],
+        tag: [{
+            field: "startYear"
+        },{
+            field: "genres"
+        }]
+    }
+});
+
+// add test data
+for(let i = 0; i < data.length; i++){
+    document.add(data[i]);
+}
+
+// perform a query
+const result = document.search({
+    query: "carmencita",
+    tag: {
+        "startYear": "1894",
+        "genres": [
+            "Documentary",
+            "Short"
+        ]
+    },
+    suggest: true,
+    enrich: true,
+    merge: true
+});
+
+console.log(result);
--- a/example/nodejs-document/commonjs/package.json
+++ b/example/nodejs-document/commonjs/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}
--- a/example/nodejs-document/data.json
+++ b/example/nodejs-document/data.json
@@ -0,0 +1,141 @@
+[
+  {
+    "tconst": "tt0000001",
+    "titleType": "short",
+    "primaryTitle": "Carmencita",
+    "originalTitle": "Carmencita",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000002",
+    "titleType": "short",
+    "primaryTitle": "Le clown et ses chiens",
+    "originalTitle": "Le clown et ses chiens",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "5",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000003",
+    "titleType": "short",
+    "primaryTitle": "Pauvre Pierrot",
+    "originalTitle": "Pauvre Pierrot",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "4",
+    "genres": [
+      "Animation",
+      "Comedy",
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000004",
+    "titleType": "short",
+    "primaryTitle": "Un bon bock",
+    "originalTitle": "Un bon bock",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "12",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000005",
+    "titleType": "short",
+    "primaryTitle": "Blacksmith Scene",
+    "originalTitle": "Blacksmith Scene",
+    "isAdult": 0,
+    "startYear": "1893",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Comedy",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000006",
+    "titleType": "short",
+    "primaryTitle": "Chinese Opium Den",
+    "originalTitle": "Chinese Opium Den",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000007",
+    "titleType": "short",
+    "primaryTitle": "Corbett and Courtney Before the Kinetograph",
+    "originalTitle": "Corbett and Courtney Before the Kinetograph",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short",
+      "Sport"
+    ]
+  },
+  {
+    "tconst": "tt0000008",
+    "titleType": "short",
+    "primaryTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "originalTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000009",
+    "titleType": "movie",
+    "primaryTitle": "Miss Jerry",
+    "originalTitle": "Miss Jerry",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "45",
+    "genres": [
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000010",
+    "titleType": "short",
+    "primaryTitle": "Leaving the Factory",
+    "originalTitle": "La sortie de l'usine Lumière à Lyon",
+    "isAdult": 0,
+    "startYear": "1895",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  }
+]
--- a/example/nodejs-document/esm/index.js
+++ b/example/nodejs-document/esm/index.js
@@ -0,0 +1,50 @@
+import { Document, Charset } from "flexsearch/esm";
+import fs from "fs";
+
+const dirname = import.meta.dirname;
+// loading test data
+const data = JSON.parse(fs.readFileSync(dirname + "/../data.json", "utf8"));
+
+// create the document index
+const document = new Document({
+    document: {
+        id: "tconst",
+        store: true,
+        index: [{
+            field: "primaryTitle",
+            tokenize: "forward",
+            encoder: Charset.LatinSimple
+        },{
+            field: "originalTitle",
+            tokenize: "forward",
+            encoder: Charset.LatinSimple
+        }],
+        tag: [{
+            field: "startYear"
+        },{
+            field: "genres"
+        }]
+    }
+});
+
+// add test data
+for(let i = 0; i < data.length; i++){
+    document.add(data[i]);
+}
+
+// perform a query
+const result = document.search({
+    query: "carmencita",
+    tag: {
+        "startYear": "1894",
+        "genres": [
+            "Documentary",
+            "Short"
+        ]
+    },
+    suggest: true,
+    enrich: true,
+    merge: true
+});
+
+console.log(result);
--- a/example/nodejs-document/esm/package.json
+++ b/example/nodejs-document/esm/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}
--- a/example/nodejs-document/package.json
+++ b/example/nodejs-document/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "nodejs-document",
+  "dependencies": {
+    "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview"
+  }
+}
--- a/example/nodejs-persistent/commonjs/index.js
+++ b/example/nodejs-persistent/commonjs/index.js
@@ -0,0 +1,64 @@
+const { Document, Charset } = require("flexsearch");
+const Postgres = require("flexsearch/db/postgres");
+const fs = require("fs");
+
+// loading test data
+const data = JSON.parse(fs.readFileSync(__dirname + "/../data.json", "utf8"));
+
+(async function(){
+
+    // create DB instance with namespace
+    const db = new Postgres("my-store");
+
+    // create the document index
+    const document = new Document({
+        document: {
+            id: "tconst",
+            store: true,
+            index: [{
+                field: "primaryTitle",
+                tokenize: "forward",
+                encoder: Charset.LatinSimple
+            },{
+                field: "originalTitle",
+                tokenize: "forward",
+                encoder: Charset.LatinSimple
+            }],
+            tag: [{
+                field: "startYear"
+            },{
+                field: "genres"
+            }]
+        }
+    });
+
+    await document.mount(db);
+    await document.destroy();
+    await document.mount(db);
+
+    // add test data
+    for(let i = 0; i < data.length; i++){
+        document.add(data[i]);
+    }
+
+    // transfer changes (bulk)
+    await document.commit();
+
+    // perform a query
+    const result = await document.search({
+        query: "carmencita",
+        tag: {
+            "startYear": "1894",
+            "genres": [
+                "Documentary",
+                "Short"
+            ]
+        },
+        suggest: true,
+        enrich: true,
+        merge: true
+    });
+
+    console.log(result);
+
+}());
--- a/example/nodejs-persistent/commonjs/package.json
+++ b/example/nodejs-persistent/commonjs/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}
--- a/example/nodejs-persistent/data.json
+++ b/example/nodejs-persistent/data.json
@@ -0,0 +1,141 @@
+[
+  {
+    "tconst": "tt0000001",
+    "titleType": "short",
+    "primaryTitle": "Carmencita",
+    "originalTitle": "Carmencita",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000002",
+    "titleType": "short",
+    "primaryTitle": "Le clown et ses chiens",
+    "originalTitle": "Le clown et ses chiens",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "5",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000003",
+    "titleType": "short",
+    "primaryTitle": "Pauvre Pierrot",
+    "originalTitle": "Pauvre Pierrot",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "4",
+    "genres": [
+      "Animation",
+      "Comedy",
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000004",
+    "titleType": "short",
+    "primaryTitle": "Un bon bock",
+    "originalTitle": "Un bon bock",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "12",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000005",
+    "titleType": "short",
+    "primaryTitle": "Blacksmith Scene",
+    "originalTitle": "Blacksmith Scene",
+    "isAdult": 0,
+    "startYear": "1893",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Comedy",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000006",
+    "titleType": "short",
+    "primaryTitle": "Chinese Opium Den",
+    "originalTitle": "Chinese Opium Den",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000007",
+    "titleType": "short",
+    "primaryTitle": "Corbett and Courtney Before the Kinetograph",
+    "originalTitle": "Corbett and Courtney Before the Kinetograph",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short",
+      "Sport"
+    ]
+  },
+  {
+    "tconst": "tt0000008",
+    "titleType": "short",
+    "primaryTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "originalTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000009",
+    "titleType": "movie",
+    "primaryTitle": "Miss Jerry",
+    "originalTitle": "Miss Jerry",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "45",
+    "genres": [
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000010",
+    "titleType": "short",
+    "primaryTitle": "Leaving the Factory",
+    "originalTitle": "La sortie de l'usine Lumière à Lyon",
+    "isAdult": 0,
+    "startYear": "1895",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  }
+]
--- a/example/nodejs-persistent/esm/index.js
+++ b/example/nodejs-persistent/esm/index.js
@@ -0,0 +1,65 @@
+import { Document, Charset } from "flexsearch/esm";
+import Postgres from "flexsearch/esm/db/postgres";
+import fs from "fs";
+
+const dirname = import.meta.dirname;
+// loading test data
+const data = JSON.parse(fs.readFileSync(dirname + "/../data.json", "utf8"));
+
+(async function(){
+
+    // create DB instance with namespace
+    const db = new Postgres("my-store");
+
+    // create the document index
+    const document = new Document({
+        document: {
+            id: "tconst",
+            store: true,
+            index: [{
+                field: "primaryTitle",
+                tokenize: "forward",
+                encoder: Charset.LatinSimple
+            },{
+                field: "originalTitle",
+                tokenize: "forward",
+                encoder: Charset.LatinSimple
+            }],
+            tag: [{
+                field: "startYear"
+            },{
+                field: "genres"
+            }]
+        }
+    });
+
+    await document.mount(db);
+    // await document.destroy();
+    // await document.mount(db);
+
+    // add test data
+    for(let i = 0; i < data.length; i++){
+        document.add(data[i]);
+    }
+
+    // transfer changes (bulk)
+    await document.commit();
+
+    // perform a query
+    const result = await document.search({
+        query: "carmencita",
+        tag: {
+            "startYear": "1894",
+            "genres": [
+                "Documentary",
+                "Short"
+            ]
+        },
+        suggest: true,
+        enrich: true,
+        merge: true
+    });
+
+    console.log(result);
+
+}());
--- a/example/nodejs-persistent/esm/package.json
+++ b/example/nodejs-persistent/esm/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}
--- a/example/nodejs-persistent/package-lock.json
+++ b/example/nodejs-persistent/package-lock.json
@@ -0,0 +1,240 @@
+{
+  "name": "nodejs-worker-persistent",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "nodejs-worker-persistent",
+      "dependencies": {
+        "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview",
+        "pg-promise": "^11.11.0"
+      }
+    },
+    "node_modules/assert-options": {
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+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/flexsearch": {
+      "version": "0.8.0",
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+      "license": "Apache-2.0"
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+      "dependencies": {
+        "pg-cursor": "^2.12.3"
+      },
+      "peerDependencies": {
+        "pg": "^8"
+      }
+    },
+    "node_modules/pg-types": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/pg-types/-/pg-types-2.2.0.tgz",
+      "integrity": "sha512-qTAAlrEsl8s4OiEQY69wDvcMIdQN6wdz5ojQiOy6YRMuynxenON0O5oCpJI6lshc6scgAY8qvJ2On/p+CXY0GA==",
+      "dependencies": {
+        "pg-int8": "1.0.1",
+        "postgres-array": "~2.0.0",
+        "postgres-bytea": "~1.0.0",
+        "postgres-date": "~1.0.4",
+        "postgres-interval": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/pgpass": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/pgpass/-/pgpass-1.0.5.tgz",
+      "integrity": "sha512-FdW9r/jQZhSeohs1Z3sI1yxFQNFvMcnmfuj4WBMUTxOrAyLMaTcE1aAMBiTlbMNaXvBCQuVi0R7hd8udDSP7ug==",
+      "dependencies": {
+        "split2": "^4.1.0"
+      }
+    },
+    "node_modules/postgres-array": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-array/-/postgres-array-2.0.0.tgz",
+      "integrity": "sha512-VpZrUqU5A69eQyW2c5CA1jtLecCsN2U/bD6VilrFDWq5+5UIEVO7nazS3TEcHf1zuPYO/sqGvUvW62g86RXZuA==",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/postgres-bytea": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-bytea/-/postgres-bytea-1.0.0.tgz",
+      "integrity": "sha512-xy3pmLuQqRBZBXDULy7KbaitYqLcmxigw14Q5sj8QBVLqEwXfeybIKVWiqAXTlcvdvb0+xkOtDbfQMOf4lST1w==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-date": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/postgres-date/-/postgres-date-1.0.7.tgz",
+      "integrity": "sha512-suDmjLVQg78nMK2UZ454hAG+OAW+HQPZ6n++TNDUX+L0+uUlLywnoxJKDou51Zm+zTCjrCl0Nq6J9C5hP9vK/Q==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-interval": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/postgres-interval/-/postgres-interval-1.2.0.tgz",
+      "integrity": "sha512-9ZhXKM/rw350N1ovuWHbGxnGh/SNJ4cnxHiM0rxE4VN41wsg8P8zWn9hv/buK00RP4WvlOyr/RBDiptyxVbkZQ==",
+      "dependencies": {
+        "xtend": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/spex": {
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/spex/-/spex-3.4.0.tgz",
+      "integrity": "sha512-8JeZJ7QlEBnSj1W1fKXgbB2KUPA8k4BxFMf6lZX/c1ZagU/1b9uZWZK0yD6yjfzqAIuTNG4YlRmtMpQiXuohsg==",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "engines": {
+        "node": ">= 10.x"
+      }
+    },
+    "node_modules/xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "engines": {
+        "node": ">=0.4"
+      }
+    }
+  }
+}
--- a/example/nodejs-persistent/package.json
+++ b/example/nodejs-persistent/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "nodejs-persistent",
+  "dependencies": {
+    "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview",
+    "pg-promise": "^11.11.0"
+  }
+}
--- a/example/nodejs-worker-persistent/commonjs/config.genres.js
+++ b/example/nodejs-worker-persistent/commonjs/config.genres.js
@@ -0,0 +1,7 @@
+const Postgres = require("flexsearch/db/postgres");
+
+module.exports = {
+    db: new Postgres("my-store", {
+        field: "genres"
+    })
+};
--- a/example/nodejs-worker-persistent/commonjs/config.originalTitle.js
+++ b/example/nodejs-worker-persistent/commonjs/config.originalTitle.js
@@ -0,0 +1,10 @@
+const Postgres = require("flexsearch/db/postgres");
+const { Charset } = require("flexsearch");
+
+module.exports = {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple,
+    db: new Postgres("my-store", {
+        field: "originalTitle"
+    })
+};
--- a/example/nodejs-worker-persistent/commonjs/config.primaryTitle.js
+++ b/example/nodejs-worker-persistent/commonjs/config.primaryTitle.js
@@ -0,0 +1,10 @@
+const Postgres = require("flexsearch/db/postgres");
+const { Charset } = require("flexsearch");
+
+module.exports = {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple,
+    db: new Postgres("my-store", {
+        field: "primaryTitle"
+    })
+};
--- a/example/nodejs-worker-persistent/commonjs/config.startYear.js
+++ b/example/nodejs-worker-persistent/commonjs/config.startYear.js
@@ -0,0 +1,7 @@
+const Postgres = require("flexsearch/db/postgres");
+
+module.exports = {
+    db: new Postgres("my-store", {
+        field: "startYear"
+    })
+};
--- a/example/nodejs-worker-persistent/commonjs/index.js
+++ b/example/nodejs-worker-persistent/commonjs/index.js
@@ -0,0 +1,65 @@
+const { Document } = require("flexsearch");
+const Postgres = require("flexsearch/db/postgres");
+const fs = require("fs");
+
+// loading test data
+const data = JSON.parse(fs.readFileSync(__dirname + "/../data.json", "utf8"));
+
+(async function(){
+
+    // create DB instance with namespace
+    const db = new Postgres("my-store");
+
+    // create the document index
+    const document = new Document({
+        worker: true,
+        document: {
+            id: "tconst",
+            store: true,
+            index: [{
+                field: "primaryTitle",
+                config: __dirname + "/config.primaryTitle.js"
+            },{
+                field: "originalTitle",
+                config: __dirname + "/config.originalTitle.js"
+            }],
+            tag: [{
+                field: "startYear",
+                config: __dirname + "/config.startYear.js"
+            },{
+                field: "genres",
+                config: __dirname + "/config.genres.js"
+            }]
+        }
+    });
+
+    await document.mount(db);
+    // await document.destroy();
+    // await document.mount(db);
+
+    // add test data
+    for(let i = 0; i < data.length; i++){
+        document.add(data[i]);
+    }
+
+    // transfer changes (bulk)
+    await document.commit();
+
+    // perform a query
+    const result = await document.search({
+        query: "carmen",
+        tag: {
+            "startYear": "1894",
+            "genres": [
+                "Documentary",
+                "Short"
+            ]
+        },
+        suggest: true,
+        enrich: true,
+        merge: true
+    });
+
+    console.log(result);
+
+}());
--- a/example/nodejs-worker-persistent/commonjs/package.json
+++ b/example/nodejs-worker-persistent/commonjs/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}
--- a/example/nodejs-worker-persistent/data.json
+++ b/example/nodejs-worker-persistent/data.json
@@ -0,0 +1,141 @@
+[
+  {
+    "tconst": "tt0000001",
+    "titleType": "short",
+    "primaryTitle": "Carmencita",
+    "originalTitle": "Carmencita",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000002",
+    "titleType": "short",
+    "primaryTitle": "Le clown et ses chiens",
+    "originalTitle": "Le clown et ses chiens",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "5",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000003",
+    "titleType": "short",
+    "primaryTitle": "Pauvre Pierrot",
+    "originalTitle": "Pauvre Pierrot",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "4",
+    "genres": [
+      "Animation",
+      "Comedy",
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000004",
+    "titleType": "short",
+    "primaryTitle": "Un bon bock",
+    "originalTitle": "Un bon bock",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "12",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000005",
+    "titleType": "short",
+    "primaryTitle": "Blacksmith Scene",
+    "originalTitle": "Blacksmith Scene",
+    "isAdult": 0,
+    "startYear": "1893",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Comedy",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000006",
+    "titleType": "short",
+    "primaryTitle": "Chinese Opium Den",
+    "originalTitle": "Chinese Opium Den",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000007",
+    "titleType": "short",
+    "primaryTitle": "Corbett and Courtney Before the Kinetograph",
+    "originalTitle": "Corbett and Courtney Before the Kinetograph",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short",
+      "Sport"
+    ]
+  },
+  {
+    "tconst": "tt0000008",
+    "titleType": "short",
+    "primaryTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "originalTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000009",
+    "titleType": "movie",
+    "primaryTitle": "Miss Jerry",
+    "originalTitle": "Miss Jerry",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "45",
+    "genres": [
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000010",
+    "titleType": "short",
+    "primaryTitle": "Leaving the Factory",
+    "originalTitle": "La sortie de l'usine Lumière à Lyon",
+    "isAdult": 0,
+    "startYear": "1895",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  }
+]
--- a/example/nodejs-worker-persistent/esm/config.genres.js
+++ b/example/nodejs-worker-persistent/esm/config.genres.js
@@ -0,0 +1,7 @@
+import Postgres from "flexsearch/db/postgres";
+
+export default {
+    db: new Postgres("my-store", {
+        field: "genres"
+    })
+};
--- a/example/nodejs-worker-persistent/esm/config.originalTitle.js
+++ b/example/nodejs-worker-persistent/esm/config.originalTitle.js
@@ -0,0 +1,10 @@
+import Postgres from "flexsearch/esm/db/postgres";
+import { Charset } from "flexsearch/esm";
+
+export default {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple,
+    db: new Postgres("my-store", {
+        field: "originalTitle"
+    })
+};
--- a/example/nodejs-worker-persistent/esm/config.primaryTitle.js
+++ b/example/nodejs-worker-persistent/esm/config.primaryTitle.js
@@ -0,0 +1,10 @@
+import Postgres from "flexsearch/esm/db/postgres";
+import { Charset } from "flexsearch/esm";
+
+export default {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple,
+    db: new Postgres("my-store", {
+        field: "primaryTitle"
+    })
+};
--- a/example/nodejs-worker-persistent/esm/config.startYear.js
+++ b/example/nodejs-worker-persistent/esm/config.startYear.js
@@ -0,0 +1,7 @@
+import Postgres from "flexsearch/db/postgres";
+
+export default {
+    db: new Postgres("my-store", {
+        field: "startYear"
+    })
+};
--- a/example/nodejs-worker-persistent/esm/index.js
+++ b/example/nodejs-worker-persistent/esm/index.js
@@ -0,0 +1,66 @@
+import { Document } from "flexsearch/esm";
+import Postgres from "flexsearch/esm/db/postgres";
+import fs from "fs";
+
+const dirname = import.meta.dirname;
+// loading test data
+const data = JSON.parse(fs.readFileSync(dirname + "/../data.json", "utf8"));
+
+(async function(){
+
+    // create DB instance with namespace
+    const db = new Postgres("my-store");
+
+    // create the document index
+    const document = new Document({
+        worker: true,
+        document: {
+            id: "tconst",
+            store: true,
+            index: [{
+                field: "primaryTitle",
+                config: dirname + "/config.primaryTitle.js"
+            },{
+                field: "originalTitle",
+                config: dirname + "/config.originalTitle.js"
+            }],
+            tag: [{
+                field: "startYear",
+                config: dirname + "/config.startYear.js"
+            },{
+                field: "genres",
+                config: dirname + "/config.genres.js"
+            }]
+        }
+    });
+
+    await document.mount(db);
+    // await document.destroy();
+    // await document.mount(db);
+
+    // add test data
+    for(let i = 0; i < data.length; i++){
+        document.add(data[i]);
+    }
+
+    // transfer changes (bulk)
+    await document.commit();
+
+    // perform a query
+    const result = await document.search({
+        query: "carmen",
+        tag: {
+            "startYear": "1894",
+            "genres": [
+                "Documentary",
+                "Short"
+            ]
+        },
+        suggest: true,
+        enrich: true,
+        merge: true
+    });
+
+    console.log(result);
+
+}());
--- a/example/nodejs-worker-persistent/esm/package.json
+++ b/example/nodejs-worker-persistent/esm/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}
--- a/example/nodejs-worker-persistent/package-lock.json
+++ b/example/nodejs-worker-persistent/package-lock.json
@@ -0,0 +1,240 @@
+{
+  "name": "nodejs-worker-persistent",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "nodejs-worker-persistent",
+      "dependencies": {
+        "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview",
+        "pg-promise": "^11.11.0"
+      }
+    },
+    "node_modules/assert-options": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/assert-options/-/assert-options-0.8.2.tgz",
+      "integrity": "sha512-XaXoMxY0zuwAb0YuZjxIm8FeWvNq0aWNIbrzHhFjme8Smxw4JlPoyrAKQ6808k5UvQdhvnWqHZCphq5mXd4TDA==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/flexsearch": {
+      "version": "0.8.0",
+      "resolved": "git+ssh://git@github.com/nextapps-de/flexsearch.git#a253897675cdb1361554abdc7f57305a6d52de25",
+      "license": "Apache-2.0"
+    },
+    "node_modules/pg": {
+      "version": "8.14.0",
+      "resolved": "https://registry.npmjs.org/pg/-/pg-8.14.0.tgz",
+      "integrity": "sha512-nXbVpyoaXVmdqlKEzToFf37qzyeeh7mbiXsnoWvstSqohj88yaa/I/Rq/HEVn2QPSZEuLIJa/jSpRDyzjEx4FQ==",
+      "peer": true,
+      "dependencies": {
+        "pg-connection-string": "^2.7.0",
+        "pg-pool": "^3.8.0",
+        "pg-protocol": "^1.8.0",
+        "pg-types": "^2.1.0",
+        "pgpass": "1.x"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "optionalDependencies": {
+        "pg-cloudflare": "^1.1.1"
+      },
+      "peerDependencies": {
+        "pg-native": ">=3.0.1"
+      },
+      "peerDependenciesMeta": {
+        "pg-native": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/pg-cloudflare": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/pg-cloudflare/-/pg-cloudflare-1.1.1.tgz",
+      "integrity": "sha512-xWPagP/4B6BgFO+EKz3JONXv3YDgvkbVrGw2mTo3D6tVDQRh1e7cqVGvyR3BE+eQgAvx1XhW/iEASj4/jCWl3Q==",
+      "optional": true
+    },
+    "node_modules/pg-connection-string": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/pg-connection-string/-/pg-connection-string-2.7.0.tgz",
+      "integrity": "sha512-PI2W9mv53rXJQEOb8xNR8lH7Hr+EKa6oJa38zsK0S/ky2er16ios1wLKhZyxzD7jUReiWokc9WK5nxSnC7W1TA=="
+    },
+    "node_modules/pg-cursor": {
+      "version": "2.13.0",
+      "resolved": "https://registry.npmjs.org/pg-cursor/-/pg-cursor-2.13.0.tgz",
+      "integrity": "sha512-13jHi54EawM9aQhmf0+xRtvaL/g4kBjnx/tEXWAIPNKm4bxUofPfc5navrgt47z85AsxUDx4f40IzF1y9tUyeA==",
+      "peer": true,
+      "peerDependencies": {
+        "pg": "^8"
+      }
+    },
+    "node_modules/pg-int8": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/pg-int8/-/pg-int8-1.0.1.tgz",
+      "integrity": "sha512-WCtabS6t3c8SkpDBUlb1kjOs7l66xsGdKpIPZsg4wR+B3+u9UAum2odSsF9tnvxg80h4ZxLWMy4pRjOsFIqQpw==",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/pg-minify": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/pg-minify/-/pg-minify-1.7.0.tgz",
+      "integrity": "sha512-kFPxAWAhPMvOqnY7klP3scdU5R7bxpAYOm8vGExuIkcSIwuFkZYl4C4XIPQ8DtXY2NzVmAX1aFHpvFSXQ/qQmA==",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/pg-pool": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/pg-pool/-/pg-pool-3.8.0.tgz",
+      "integrity": "sha512-VBw3jiVm6ZOdLBTIcXLNdSotb6Iy3uOCwDGFAksZCXmi10nyRvnP2v3jl4d+IsLYRyXf6o9hIm/ZtUzlByNUdw==",
+      "peerDependencies": {
+        "pg": ">=8.0"
+      }
+    },
+    "node_modules/pg-promise": {
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/pg-promise/-/pg-promise-11.11.0.tgz",
+      "integrity": "sha512-nqtNHp9dvE1aMug2spLJBy6AazT9arorTlRqreHXu50pCArwQDpbu/R0tDUcyNYY4XP5HczwknkUzYi+ivyozQ==",
+      "dependencies": {
+        "assert-options": "0.8.2",
+        "pg": "8.13.3",
+        "pg-minify": "1.7.0",
+        "spex": "3.4.0"
+      },
+      "engines": {
+        "node": ">=14.0"
+      },
+      "peerDependencies": {
+        "pg-query-stream": "4.7.3"
+      }
+    },
+    "node_modules/pg-promise/node_modules/pg": {
+      "version": "8.13.3",
+      "resolved": "https://registry.npmjs.org/pg/-/pg-8.13.3.tgz",
+      "integrity": "sha512-P6tPt9jXbL9HVu/SSRERNYaYG++MjnscnegFh9pPHihfoBSujsrka0hyuymMzeJKFWrcG8wvCKy8rCe8e5nDUQ==",
+      "dependencies": {
+        "pg-connection-string": "^2.7.0",
+        "pg-pool": "^3.7.1",
+        "pg-protocol": "^1.7.1",
+        "pg-types": "^2.1.0",
+        "pgpass": "1.x"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "optionalDependencies": {
+        "pg-cloudflare": "^1.1.1"
+      },
+      "peerDependencies": {
+        "pg-native": ">=3.0.1"
+      },
+      "peerDependenciesMeta": {
+        "pg-native": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/pg-protocol": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/pg-protocol/-/pg-protocol-1.8.0.tgz",
+      "integrity": "sha512-jvuYlEkL03NRvOoyoRktBK7+qU5kOvlAwvmrH8sr3wbLrOdVWsRxQfz8mMy9sZFsqJ1hEWNfdWKI4SAmoL+j7g=="
+    },
+    "node_modules/pg-query-stream": {
+      "version": "4.7.3",
+      "resolved": "https://registry.npmjs.org/pg-query-stream/-/pg-query-stream-4.7.3.tgz",
+      "integrity": "sha512-WvsdwYXrvIXNZJflX/2MEQLjKs5TopZWeiyam1zcaFfhwQtL19ENOvGdzVsihGsbsNGdVRU5yiqg2G5p06UAbg==",
+      "peer": true,
+      "dependencies": {
+        "pg-cursor": "^2.12.3"
+      },
+      "peerDependencies": {
+        "pg": "^8"
+      }
+    },
+    "node_modules/pg-types": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/pg-types/-/pg-types-2.2.0.tgz",
+      "integrity": "sha512-qTAAlrEsl8s4OiEQY69wDvcMIdQN6wdz5ojQiOy6YRMuynxenON0O5oCpJI6lshc6scgAY8qvJ2On/p+CXY0GA==",
+      "dependencies": {
+        "pg-int8": "1.0.1",
+        "postgres-array": "~2.0.0",
+        "postgres-bytea": "~1.0.0",
+        "postgres-date": "~1.0.4",
+        "postgres-interval": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/pgpass": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/pgpass/-/pgpass-1.0.5.tgz",
+      "integrity": "sha512-FdW9r/jQZhSeohs1Z3sI1yxFQNFvMcnmfuj4WBMUTxOrAyLMaTcE1aAMBiTlbMNaXvBCQuVi0R7hd8udDSP7ug==",
+      "dependencies": {
+        "split2": "^4.1.0"
+      }
+    },
+    "node_modules/postgres-array": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-array/-/postgres-array-2.0.0.tgz",
+      "integrity": "sha512-VpZrUqU5A69eQyW2c5CA1jtLecCsN2U/bD6VilrFDWq5+5UIEVO7nazS3TEcHf1zuPYO/sqGvUvW62g86RXZuA==",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/postgres-bytea": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-bytea/-/postgres-bytea-1.0.0.tgz",
+      "integrity": "sha512-xy3pmLuQqRBZBXDULy7KbaitYqLcmxigw14Q5sj8QBVLqEwXfeybIKVWiqAXTlcvdvb0+xkOtDbfQMOf4lST1w==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-date": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/postgres-date/-/postgres-date-1.0.7.tgz",
+      "integrity": "sha512-suDmjLVQg78nMK2UZ454hAG+OAW+HQPZ6n++TNDUX+L0+uUlLywnoxJKDou51Zm+zTCjrCl0Nq6J9C5hP9vK/Q==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-interval": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/postgres-interval/-/postgres-interval-1.2.0.tgz",
+      "integrity": "sha512-9ZhXKM/rw350N1ovuWHbGxnGh/SNJ4cnxHiM0rxE4VN41wsg8P8zWn9hv/buK00RP4WvlOyr/RBDiptyxVbkZQ==",
+      "dependencies": {
+        "xtend": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/spex": {
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/spex/-/spex-3.4.0.tgz",
+      "integrity": "sha512-8JeZJ7QlEBnSj1W1fKXgbB2KUPA8k4BxFMf6lZX/c1ZagU/1b9uZWZK0yD6yjfzqAIuTNG4YlRmtMpQiXuohsg==",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "engines": {
+        "node": ">= 10.x"
+      }
+    },
+    "node_modules/xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "engines": {
+        "node": ">=0.4"
+      }
+    }
+  }
+}
--- a/example/nodejs-worker-persistent/package.json
+++ b/example/nodejs-worker-persistent/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "nodejs-worker-persistent",
+  "dependencies": {
+    "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview",
+    "pg-promise": "^11.11.0"
+  }
+}
--- a/example/nodejs-worker/commonjs/config.originalTitle.js
+++ b/example/nodejs-worker/commonjs/config.originalTitle.js
@@ -0,0 +1,6 @@
+const { Charset } = require("flexsearch");
+
+module.exports = {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple
+};
--- a/example/nodejs-worker/commonjs/config.primaryTitle.js
+++ b/example/nodejs-worker/commonjs/config.primaryTitle.js
@@ -0,0 +1,6 @@
+const { Charset } = require("flexsearch");
+
+module.exports = {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple
+};
--- a/example/nodejs-worker/commonjs/index.js
+++ b/example/nodejs-worker/commonjs/index.js
@@ -0,0 +1,52 @@
+const { Document } = require("flexsearch");
+const fs = require("fs");
+
+// loading test data
+const data = JSON.parse(fs.readFileSync(__dirname + "/../data.json", "utf8"));
+
+(async function(){
+
+    // create the document index
+    const document = new Document({
+        worker: true,
+        document: {
+            id: "tconst",
+            store: true,
+            index: [{
+                field: "primaryTitle",
+                config: __dirname + "/config.primaryTitle.js"
+            },{
+                field: "originalTitle",
+                config: __dirname + "/config.originalTitle.js"
+            }],
+            tag: [{
+                field: "startYear"
+            },{
+                field: "genres"
+            }]
+        }
+    });
+
+    // add test data
+    for(let i = 0; i < data.length; i++){
+        await document.add(data[i]);
+    }
+
+    // perform a query
+    const result = await document.search({
+        query: "carmen",
+        tag: {
+            "startYear": "1894",
+            "genres": [
+                "Documentary",
+                "Short"
+            ]
+        },
+        suggest: true,
+        enrich: true,
+        merge: true
+    });
+
+    console.log(result);
+
+}());
--- a/example/nodejs-worker/commonjs/package.json
+++ b/example/nodejs-worker/commonjs/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}
--- a/example/nodejs-worker/data.json
+++ b/example/nodejs-worker/data.json
@@ -0,0 +1,141 @@
+[
+  {
+    "tconst": "tt0000001",
+    "titleType": "short",
+    "primaryTitle": "Carmencita",
+    "originalTitle": "Carmencita",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000002",
+    "titleType": "short",
+    "primaryTitle": "Le clown et ses chiens",
+    "originalTitle": "Le clown et ses chiens",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "5",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000003",
+    "titleType": "short",
+    "primaryTitle": "Pauvre Pierrot",
+    "originalTitle": "Pauvre Pierrot",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "4",
+    "genres": [
+      "Animation",
+      "Comedy",
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000004",
+    "titleType": "short",
+    "primaryTitle": "Un bon bock",
+    "originalTitle": "Un bon bock",
+    "isAdult": 0,
+    "startYear": "1892",
+    "endYear": "",
+    "runtimeMinutes": "12",
+    "genres": [
+      "Animation",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000005",
+    "titleType": "short",
+    "primaryTitle": "Blacksmith Scene",
+    "originalTitle": "Blacksmith Scene",
+    "isAdult": 0,
+    "startYear": "1893",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Comedy",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000006",
+    "titleType": "short",
+    "primaryTitle": "Chinese Opium Den",
+    "originalTitle": "Chinese Opium Den",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000007",
+    "titleType": "short",
+    "primaryTitle": "Corbett and Courtney Before the Kinetograph",
+    "originalTitle": "Corbett and Courtney Before the Kinetograph",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Short",
+      "Sport"
+    ]
+  },
+  {
+    "tconst": "tt0000008",
+    "titleType": "short",
+    "primaryTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "originalTitle": "Edison Kinetoscopic Record of a Sneeze",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  },
+  {
+    "tconst": "tt0000009",
+    "titleType": "movie",
+    "primaryTitle": "Miss Jerry",
+    "originalTitle": "Miss Jerry",
+    "isAdult": 0,
+    "startYear": "1894",
+    "endYear": "",
+    "runtimeMinutes": "45",
+    "genres": [
+      "Romance"
+    ]
+  },
+  {
+    "tconst": "tt0000010",
+    "titleType": "short",
+    "primaryTitle": "Leaving the Factory",
+    "originalTitle": "La sortie de l'usine Lumière à Lyon",
+    "isAdult": 0,
+    "startYear": "1895",
+    "endYear": "",
+    "runtimeMinutes": "1",
+    "genres": [
+      "Documentary",
+      "Short"
+    ]
+  }
+]
--- a/example/nodejs-worker/esm/config.originalTitle.js
+++ b/example/nodejs-worker/esm/config.originalTitle.js
@@ -0,0 +1,6 @@
+import { Charset } from "flexsearch/esm";
+
+export default {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple
+};
--- a/example/nodejs-worker/esm/config.primaryTitle.js
+++ b/example/nodejs-worker/esm/config.primaryTitle.js
@@ -0,0 +1,6 @@
+import { Charset } from "flexsearch/esm";
+
+export default {
+    tokenize: "forward",
+    encoder: Charset.LatinSimple
+};
--- a/example/nodejs-worker/esm/index.js
+++ b/example/nodejs-worker/esm/index.js
@@ -0,0 +1,53 @@
+import { Document } from "flexsearch/esm";
+import fs from "fs";
+
+const dirname = import.meta.dirname;
+// loading test data
+const data = JSON.parse(fs.readFileSync(dirname + "/../data.json", "utf8"));
+
+(async function(){
+
+    // create the document
+    const document = new Document({
+        worker: true,
+        document: {
+            id: "tconst",
+            store: true,
+            index: [{
+                field: "primaryTitle",
+                config: dirname + "/config.primaryTitle.js"
+            },{
+                field: "originalTitle",
+                config: dirname + "/config.originalTitle.js"
+            }],
+            tag: [{
+                field: "startYear"
+            },{
+                field: "genres"
+            }]
+        }
+    });
+
+    // add test data
+    for(let i = 0; i < data.length; i++){
+        await document.add(data[i]);
+    }
+
+    // perform a query
+    const result = await document.search({
+        query: "carmen",
+        tag: {
+            "startYear": "1894",
+            "genres": [
+                "Documentary",
+                "Short"
+            ]
+        },
+        suggest: true,
+        enrich: true,
+        merge: true
+    });
+
+    console.log(result);
+
+}());
--- a/example/nodejs-worker/esm/package.json
+++ b/example/nodejs-worker/esm/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}
--- a/example/nodejs-worker/package-lock.json
+++ b/example/nodejs-worker/package-lock.json
@@ -0,0 +1,18 @@
+{
+  "name": "nodejs-worker-persistent",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "nodejs-worker-persistent",
+      "dependencies": {
+        "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview"
+      }
+    },
+    "node_modules/flexsearch": {
+      "version": "0.8.0",
+      "resolved": "git+ssh://git@github.com/nextapps-de/flexsearch.git#a253897675cdb1361554abdc7f57305a6d52de25",
+      "license": "Apache-2.0"
+    }
+  }
+}
--- a/example/nodejs-worker/package.json
+++ b/example/nodejs-worker/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "nodejs-worker",
+  "dependencies": {
+    "flexsearch": "github:nextapps-de/flexsearch#v0.8-preview"
+  }
+}