Initial commit - Event Planner application

node_modules/kysely/dist/esm/dialect/mysql/mysql-adapter.d.ts

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+import type { Kysely } from '../../kysely.js';
+import { DialectAdapterBase } from '../dialect-adapter-base.js';
+import type { MigrationLockOptions } from '../dialect-adapter.js';
+export declare class MysqlAdapter extends DialectAdapterBase {
+    /**
+     * Whether or not this dialect supports transactional DDL.
+     *
+     * If this is true, migrations are executed inside a transaction.
+     */
+    get supportsTransactionalDdl(): boolean;
+    /**
+     * Whether or not this dialect supports the `returning` in inserts
+     * updates and deletes.
+     */
+    get supportsReturning(): boolean;
+    /**
+     * This method is used to acquire a lock for the migrations so that
+     * it's not possible for two migration operations to run in parallel.
+     *
+     * Most dialects have explicit locks that can be used, like advisory locks
+     * in PostgreSQL and the get_lock function in MySQL.
+     *
+     * If the dialect doesn't have explicit locks the {@link MigrationLockOptions.lockTable}
+     * created by Kysely can be used instead. You can access it through the `options` object.
+     * The lock table has two columns `id` and `is_locked` and there's only one row in the table
+     * whose id is {@link MigrationLockOptions.lockRowId}. `is_locked` is an integer. Kysely
+     * takes care of creating the lock table and inserting the one single row to it before this
+     * method is executed. If the dialect supports schemas and the user has specified a custom
+     * schema in their migration settings, the options object also contains the schema name in
+     * {@link MigrationLockOptions.lockTableSchema}.
+     *
+     * Here's an example of how you might implement this method for a dialect that doesn't
+     * have explicit locks but supports `FOR UPDATE` row locks and transactional DDL:
+     *
+     * ```ts
+     * import { DialectAdapterBase, type MigrationLockOptions, Kysely } from 'kysely'
+     *
+     * export class MyAdapter extends DialectAdapterBase {
+     *   override async acquireMigrationLock(
+     *     db: Kysely<any>,
+     *     options: MigrationLockOptions
+     *   ): Promise<void> {
+     *     const queryDb = options.lockTableSchema
+     *       ? db.withSchema(options.lockTableSchema)
+     *       : db
+     *
+     *     // Since our imaginary dialect supports transactional DDL and has
+     *     // row locks, we can simply take a row lock here and it will guarantee
+     *     // all subsequent calls to this method from other transactions will
+     *     // wait until this transaction finishes.
+     *     await queryDb
+     *       .selectFrom(options.lockTable)
+     *       .selectAll()
+     *       .where('id', '=', options.lockRowId)
+     *       .forUpdate()
+     *       .execute()
+     *   }
+     *
+     *   override async releaseMigrationLock() {
+     *     // noop
+     *   }
+     * }
+     * ```
+     *
+     * If `supportsTransactionalDdl` is `true` then the `db` passed to this method
+     * is a transaction inside which the migrations will be executed. Otherwise
+     * `db` is a single connection (session) that will be used to execute the
+     * migrations.
+     */
+    acquireMigrationLock(db: Kysely<any>, _opt: MigrationLockOptions): Promise<void>;
+    /**
+     * Releases the migration lock. See {@link acquireMigrationLock}.
+     *
+     * If `supportsTransactionalDdl` is `true` then the `db` passed to this method
+     * is a transaction inside which the migrations were executed. Otherwise `db`
+     * is a single connection (session) that was used to execute the migrations
+     * and the `acquireMigrationLock` call.
+     */
+    releaseMigrationLock(db: Kysely<any>, _opt: MigrationLockOptions): Promise<void>;
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-adapter.js

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+/// <reference types="./mysql-adapter.d.ts" />
+import { sql } from '../../raw-builder/sql.js';
+import { DialectAdapterBase } from '../dialect-adapter-base.js';
+const LOCK_ID = 'ea586330-2c93-47c8-908d-981d9d270f9d';
+const LOCK_TIMEOUT_SECONDS = 60 * 60;
+export class MysqlAdapter extends DialectAdapterBase {
+    get supportsTransactionalDdl() {
+        return false;
+    }
+    get supportsReturning() {
+        return false;
+    }
+    async acquireMigrationLock(db, _opt) {
+        // Kysely uses a single connection to run the migrations. Because of that, we
+        // can take a lock using `get_lock`. Locks acquired using `get_lock` get
+        // released when the connection is destroyed (session ends) or when the lock
+        // is released using `release_lock`. This way we know that the lock is either
+        // released by us after successfull or failed migrations OR it's released by
+        // MySQL if the process gets killed for some reason.
+        await sql `select get_lock(${sql.lit(LOCK_ID)}, ${sql.lit(LOCK_TIMEOUT_SECONDS)})`.execute(db);
+    }
+    async releaseMigrationLock(db, _opt) {
+        await sql `select release_lock(${sql.lit(LOCK_ID)})`.execute(db);
+    }
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-dialect-config.d.ts

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+import type { DatabaseConnection } from '../../driver/database-connection.js';
+/**
+ * Config for the MySQL dialect.
+ *
+ * https://github.com/sidorares/node-mysql2#using-connection-pools
+ */
+export interface MysqlDialectConfig {
+    /**
+     * A mysql2 Pool instance or a function that returns one.
+     *
+     * If a function is provided, it's called once when the first query is executed.
+     *
+     * https://github.com/sidorares/node-mysql2#using-connection-pools
+     */
+    pool: MysqlPool | (() => Promise<MysqlPool>);
+    /**
+     * Called once for each created connection.
+     */
+    onCreateConnection?: (connection: DatabaseConnection) => Promise<void>;
+    /**
+     * Called every time a connection is acquired from the connection pool.
+     */
+    onReserveConnection?: (connection: DatabaseConnection) => Promise<void>;
+}
+/**
+ * This interface is the subset of mysql2 driver's `Pool` class that
+ * kysely needs.
+ *
+ * We don't use the type from `mysql2` here to not have a dependency to it.
+ *
+ * https://github.com/sidorares/node-mysql2#using-connection-pools
+ */
+export interface MysqlPool {
+    getConnection(callback: (error: unknown, connection: MysqlPoolConnection) => void): void;
+    end(callback: (error: unknown) => void): void;
+}
+export interface MysqlPoolConnection {
+    query(sql: string, parameters: Array<unknown>): {
+        stream: <T>(options: MysqlStreamOptions) => MysqlStream<T>;
+    };
+    query(sql: string, parameters: Array<unknown>, callback: (error: unknown, result: MysqlQueryResult) => void): void;
+    release(): void;
+}
+export interface MysqlStreamOptions {
+    highWaterMark?: number;
+    objectMode?: true;
+}
+export interface MysqlStream<T> {
+    [Symbol.asyncIterator](): AsyncIterableIterator<T>;
+}
+export interface MysqlOkPacket {
+    affectedRows: number;
+    changedRows: number;
+    insertId: number;
+}
+export type MysqlQueryResult = MysqlOkPacket | Record<string, unknown>[];

node_modules/kysely/dist/esm/dialect/mysql/mysql-dialect-config.js

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+/// <reference types="./mysql-dialect-config.d.ts" />
+export {};

node_modules/kysely/dist/esm/dialect/mysql/mysql-dialect.d.ts

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+import type { Driver } from '../../driver/driver.js';
+import type { Kysely } from '../../kysely.js';
+import type { QueryCompiler } from '../../query-compiler/query-compiler.js';
+import type { Dialect } from '../dialect.js';
+import type { DatabaseIntrospector } from '../database-introspector.js';
+import type { DialectAdapter } from '../dialect-adapter.js';
+import type { MysqlDialectConfig } from './mysql-dialect-config.js';
+/**
+ * MySQL dialect that uses the [mysql2](https://github.com/sidorares/node-mysql2#readme) library.
+ *
+ * The constructor takes an instance of {@link MysqlDialectConfig}.
+ *
+ * ```ts
+ * import { createPool } from 'mysql2'
+ *
+ * new MysqlDialect({
+ *   pool: createPool({
+ *     database: 'some_db',
+ *     host: 'localhost',
+ *   })
+ * })
+ * ```
+ *
+ * If you want the pool to only be created once it's first used, `pool`
+ * can be a function:
+ *
+ * ```ts
+ * import { createPool } from 'mysql2'
+ *
+ * new MysqlDialect({
+ *   pool: async () => createPool({
+ *     database: 'some_db',
+ *     host: 'localhost',
+ *   })
+ * })
+ * ```
+ */
+export declare class MysqlDialect implements Dialect {
+    #private;
+    constructor(config: MysqlDialectConfig);
+    /**
+     * Creates a driver for the dialect.
+     */
+    createDriver(): Driver;
+    /**
+     * Creates a query compiler for the dialect.
+     */
+    createQueryCompiler(): QueryCompiler;
+    /**
+     * Creates an adapter for the dialect.
+     */
+    createAdapter(): DialectAdapter;
+    /**
+     * Creates a database introspector that can be used to get database metadata
+     * such as the table names and column names of those tables.
+     *
+     * `db` never has any plugins installed. It's created using
+     * {@link Kysely.withoutPlugins}.
+     */
+    createIntrospector(db: Kysely<any>): DatabaseIntrospector;
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-dialect.js

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+/// <reference types="./mysql-dialect.d.ts" />
+import { MysqlDriver } from './mysql-driver.js';
+import { MysqlQueryCompiler } from './mysql-query-compiler.js';
+import { MysqlIntrospector } from './mysql-introspector.js';
+import { MysqlAdapter } from './mysql-adapter.js';
+/**
+ * MySQL dialect that uses the [mysql2](https://github.com/sidorares/node-mysql2#readme) library.
+ *
+ * The constructor takes an instance of {@link MysqlDialectConfig}.
+ *
+ * ```ts
+ * import { createPool } from 'mysql2'
+ *
+ * new MysqlDialect({
+ *   pool: createPool({
+ *     database: 'some_db',
+ *     host: 'localhost',
+ *   })
+ * })
+ * ```
+ *
+ * If you want the pool to only be created once it's first used, `pool`
+ * can be a function:
+ *
+ * ```ts
+ * import { createPool } from 'mysql2'
+ *
+ * new MysqlDialect({
+ *   pool: async () => createPool({
+ *     database: 'some_db',
+ *     host: 'localhost',
+ *   })
+ * })
+ * ```
+ */
+export class MysqlDialect {
+    #config;
+    constructor(config) {
+        this.#config = config;
+    }
+    createDriver() {
+        return new MysqlDriver(this.#config);
+    }
+    createQueryCompiler() {
+        return new MysqlQueryCompiler();
+    }
+    createAdapter() {
+        return new MysqlAdapter();
+    }
+    createIntrospector(db) {
+        return new MysqlIntrospector(db);
+    }
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-driver.d.ts

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+import type { DatabaseConnection, QueryResult } from '../../driver/database-connection.js';
+import type { Driver, TransactionSettings } from '../../driver/driver.js';
+import { CompiledQuery } from '../../query-compiler/compiled-query.js';
+import type { QueryCompiler } from '../../query-compiler/query-compiler.js';
+import type { MysqlDialectConfig, MysqlPoolConnection } from './mysql-dialect-config.js';
+declare const PRIVATE_RELEASE_METHOD: unique symbol;
+export declare class MysqlDriver implements Driver {
+    #private;
+    constructor(configOrPool: MysqlDialectConfig);
+    /**
+     * Initializes the driver.
+     *
+     * After calling this method the driver should be usable and `acquireConnection` etc.
+     * methods should be callable.
+     */
+    init(): Promise<void>;
+    /**
+     * Acquires a new connection from the pool.
+     */
+    acquireConnection(): Promise<DatabaseConnection>;
+    /**
+     * Begins a transaction.
+     */
+    beginTransaction(connection: DatabaseConnection, settings: TransactionSettings): Promise<void>;
+    /**
+     * Commits a transaction.
+     */
+    commitTransaction(connection: DatabaseConnection): Promise<void>;
+    /**
+     * Rolls back a transaction.
+     */
+    rollbackTransaction(connection: DatabaseConnection): Promise<void>;
+    savepoint(connection: DatabaseConnection, savepointName: string, compileQuery: QueryCompiler['compileQuery']): Promise<void>;
+    rollbackToSavepoint(connection: DatabaseConnection, savepointName: string, compileQuery: QueryCompiler['compileQuery']): Promise<void>;
+    releaseSavepoint(connection: DatabaseConnection, savepointName: string, compileQuery: QueryCompiler['compileQuery']): Promise<void>;
+    /**
+     * Releases a connection back to the pool.
+     */
+    releaseConnection(connection: MysqlConnection): Promise<void>;
+    /**
+     * Destroys the driver and releases all resources.
+     */
+    destroy(): Promise<void>;
+}
+declare class MysqlConnection implements DatabaseConnection {
+    #private;
+    constructor(rawConnection: MysqlPoolConnection);
+    executeQuery<O>(compiledQuery: CompiledQuery): Promise<QueryResult<O>>;
+    streamQuery<O>(compiledQuery: CompiledQuery, _chunkSize: number): AsyncIterableIterator<QueryResult<O>>;
+    [PRIVATE_RELEASE_METHOD](): void;
+}
+export {};

node_modules/kysely/dist/esm/dialect/mysql/mysql-driver.js

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+/// <reference types="./mysql-driver.d.ts" />
+import { parseSavepointCommand } from '../../parser/savepoint-parser.js';
+import { CompiledQuery } from '../../query-compiler/compiled-query.js';
+import { isFunction, isObject, freeze } from '../../util/object-utils.js';
+import { createQueryId } from '../../util/query-id.js';
+import { extendStackTrace } from '../../util/stack-trace-utils.js';
+const PRIVATE_RELEASE_METHOD = Symbol();
+export class MysqlDriver {
+    #config;
+    #connections = new WeakMap();
+    #pool;
+    constructor(configOrPool) {
+        this.#config = freeze({ ...configOrPool });
+    }
+    async init() {
+        this.#pool = isFunction(this.#config.pool)
+            ? await this.#config.pool()
+            : this.#config.pool;
+    }
+    async acquireConnection() {
+        const rawConnection = await this.#acquireConnection();
+        let connection = this.#connections.get(rawConnection);
+        if (!connection) {
+            connection = new MysqlConnection(rawConnection);
+            this.#connections.set(rawConnection, connection);
+            // The driver must take care of calling `onCreateConnection` when a new
+            // connection is created. The `mysql2` module doesn't provide an async hook
+            // for the connection creation. We need to call the method explicitly.
+            if (this.#config?.onCreateConnection) {
+                await this.#config.onCreateConnection(connection);
+            }
+        }
+        if (this.#config?.onReserveConnection) {
+            await this.#config.onReserveConnection(connection);
+        }
+        return connection;
+    }
+    async #acquireConnection() {
+        return new Promise((resolve, reject) => {
+            this.#pool.getConnection(async (err, rawConnection) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(rawConnection);
+                }
+            });
+        });
+    }
+    async beginTransaction(connection, settings) {
+        if (settings.isolationLevel || settings.accessMode) {
+            const parts = [];
+            if (settings.isolationLevel) {
+                parts.push(`isolation level ${settings.isolationLevel}`);
+            }
+            if (settings.accessMode) {
+                parts.push(settings.accessMode);
+            }
+            const sql = `set transaction ${parts.join(', ')}`;
+            // On MySQL this sets the isolation level of the next transaction.
+            await connection.executeQuery(CompiledQuery.raw(sql));
+        }
+        await connection.executeQuery(CompiledQuery.raw('begin'));
+    }
+    async commitTransaction(connection) {
+        await connection.executeQuery(CompiledQuery.raw('commit'));
+    }
+    async rollbackTransaction(connection) {
+        await connection.executeQuery(CompiledQuery.raw('rollback'));
+    }
+    async savepoint(connection, savepointName, compileQuery) {
+        await connection.executeQuery(compileQuery(parseSavepointCommand('savepoint', savepointName), createQueryId()));
+    }
+    async rollbackToSavepoint(connection, savepointName, compileQuery) {
+        await connection.executeQuery(compileQuery(parseSavepointCommand('rollback to', savepointName), createQueryId()));
+    }
+    async releaseSavepoint(connection, savepointName, compileQuery) {
+        await connection.executeQuery(compileQuery(parseSavepointCommand('release savepoint', savepointName), createQueryId()));
+    }
+    async releaseConnection(connection) {
+        connection[PRIVATE_RELEASE_METHOD]();
+    }
+    async destroy() {
+        return new Promise((resolve, reject) => {
+            this.#pool.end((err) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve();
+                }
+            });
+        });
+    }
+}
+function isOkPacket(obj) {
+    return isObject(obj) && 'insertId' in obj && 'affectedRows' in obj;
+}
+class MysqlConnection {
+    #rawConnection;
+    constructor(rawConnection) {
+        this.#rawConnection = rawConnection;
+    }
+    async executeQuery(compiledQuery) {
+        try {
+            const result = await this.#executeQuery(compiledQuery);
+            if (isOkPacket(result)) {
+                const { insertId, affectedRows, changedRows } = result;
+                return {
+                    insertId: insertId !== undefined &&
+                        insertId !== null &&
+                        insertId.toString() !== '0'
+                        ? BigInt(insertId)
+                        : undefined,
+                    numAffectedRows: affectedRows !== undefined && affectedRows !== null
+                        ? BigInt(affectedRows)
+                        : undefined,
+                    numChangedRows: changedRows !== undefined && changedRows !== null
+                        ? BigInt(changedRows)
+                        : undefined,
+                    rows: [],
+                };
+            }
+            else if (Array.isArray(result)) {
+                return {
+                    rows: result,
+                };
+            }
+            return {
+                rows: [],
+            };
+        }
+        catch (err) {
+            throw extendStackTrace(err, new Error());
+        }
+    }
+    #executeQuery(compiledQuery) {
+        return new Promise((resolve, reject) => {
+            this.#rawConnection.query(compiledQuery.sql, compiledQuery.parameters, (err, result) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(result);
+                }
+            });
+        });
+    }
+    async *streamQuery(compiledQuery, _chunkSize) {
+        const stream = this.#rawConnection
+            .query(compiledQuery.sql, compiledQuery.parameters)
+            .stream({
+            objectMode: true,
+        });
+        try {
+            for await (const row of stream) {
+                yield {
+                    rows: [row],
+                };
+            }
+        }
+        catch (ex) {
+            if (ex &&
+                typeof ex === 'object' &&
+                'code' in ex &&
+                // @ts-ignore
+                ex.code === 'ERR_STREAM_PREMATURE_CLOSE') {
+                // Most likely because of https://github.com/mysqljs/mysql/blob/master/lib/protocol/sequences/Query.js#L220
+                return;
+            }
+            throw ex;
+        }
+    }
+    [PRIVATE_RELEASE_METHOD]() {
+        this.#rawConnection.release();
+    }
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-introspector.d.ts

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+import type { DatabaseIntrospector, DatabaseMetadata, DatabaseMetadataOptions, SchemaMetadata, TableMetadata } from '../database-introspector.js';
+import type { Kysely } from '../../kysely.js';
+export declare class MysqlIntrospector implements DatabaseIntrospector {
+    #private;
+    constructor(db: Kysely<any>);
+    /**
+     * Get schema metadata.
+     */
+    getSchemas(): Promise<SchemaMetadata[]>;
+    /**
+     * Get tables and views metadata.
+     */
+    getTables(options?: DatabaseMetadataOptions): Promise<TableMetadata[]>;
+    /**
+     * Get the database metadata such as table and column names.
+     *
+     * @deprecated Use getTables() instead.
+     */
+    getMetadata(options?: DatabaseMetadataOptions): Promise<DatabaseMetadata>;
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-introspector.js

@@ -0,0 +1,76 @@
+/// <reference types="./mysql-introspector.d.ts" />
+import { DEFAULT_MIGRATION_LOCK_TABLE, DEFAULT_MIGRATION_TABLE, } from '../../migration/migrator.js';
+import { freeze } from '../../util/object-utils.js';
+import { sql } from '../../raw-builder/sql.js';
+export class MysqlIntrospector {
+    #db;
+    constructor(db) {
+        this.#db = db;
+    }
+    async getSchemas() {
+        let rawSchemas = await this.#db
+            .selectFrom('information_schema.schemata')
+            .select('schema_name')
+            .$castTo()
+            .execute();
+        return rawSchemas.map((it) => ({ name: it.SCHEMA_NAME }));
+    }
+    async getTables(options = { withInternalKyselyTables: false }) {
+        let query = this.#db
+            .selectFrom('information_schema.columns as columns')
+            .innerJoin('information_schema.tables as tables', (b) => b
+            .onRef('columns.TABLE_CATALOG', '=', 'tables.TABLE_CATALOG')
+            .onRef('columns.TABLE_SCHEMA', '=', 'tables.TABLE_SCHEMA')
+            .onRef('columns.TABLE_NAME', '=', 'tables.TABLE_NAME'))
+            .select([
+            'columns.COLUMN_NAME',
+            'columns.COLUMN_DEFAULT',
+            'columns.TABLE_NAME',
+            'columns.TABLE_SCHEMA',
+            'tables.TABLE_TYPE',
+            'columns.IS_NULLABLE',
+            'columns.DATA_TYPE',
+            'columns.EXTRA',
+            'columns.COLUMN_COMMENT',
+        ])
+            .where('columns.TABLE_SCHEMA', '=', sql `database()`)
+            .orderBy('columns.TABLE_NAME')
+            .orderBy('columns.ORDINAL_POSITION')
+            .$castTo();
+        if (!options.withInternalKyselyTables) {
+            query = query
+                .where('columns.TABLE_NAME', '!=', DEFAULT_MIGRATION_TABLE)
+                .where('columns.TABLE_NAME', '!=', DEFAULT_MIGRATION_LOCK_TABLE);
+        }
+        const rawColumns = await query.execute();
+        return this.#parseTableMetadata(rawColumns);
+    }
+    async getMetadata(options) {
+        return {
+            tables: await this.getTables(options),
+        };
+    }
+    #parseTableMetadata(columns) {
+        return columns.reduce((tables, it) => {
+            let table = tables.find((tbl) => tbl.name === it.TABLE_NAME);
+            if (!table) {
+                table = freeze({
+                    name: it.TABLE_NAME,
+                    isView: it.TABLE_TYPE === 'VIEW',
+                    schema: it.TABLE_SCHEMA,
+                    columns: [],
+                });
+                tables.push(table);
+            }
+            table.columns.push(freeze({
+                name: it.COLUMN_NAME,
+                dataType: it.DATA_TYPE,
+                isNullable: it.IS_NULLABLE === 'YES',
+                isAutoIncrementing: it.EXTRA.toLowerCase().includes('auto_increment'),
+                hasDefaultValue: it.COLUMN_DEFAULT !== null,
+                comment: it.COLUMN_COMMENT === '' ? undefined : it.COLUMN_COMMENT,
+            }));
+            return tables;
+        }, []);
+    }
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-query-compiler.d.ts

@@ -0,0 +1,13 @@
+import type { CreateIndexNode } from '../../operation-node/create-index-node.js';
+import { DefaultQueryCompiler } from '../../query-compiler/default-query-compiler.js';
+export declare class MysqlQueryCompiler extends DefaultQueryCompiler {
+    protected getCurrentParameterPlaceholder(): string;
+    protected getLeftExplainOptionsWrapper(): string;
+    protected getExplainOptionAssignment(): string;
+    protected getExplainOptionsDelimiter(): string;
+    protected getRightExplainOptionsWrapper(): string;
+    protected getLeftIdentifierWrapper(): string;
+    protected getRightIdentifierWrapper(): string;
+    protected sanitizeIdentifier(identifier: string): string;
+    protected visitCreateIndex(node: CreateIndexNode): void;
+}

node_modules/kysely/dist/esm/dialect/mysql/mysql-query-compiler.js

@@ -0,0 +1,57 @@
+/// <reference types="./mysql-query-compiler.d.ts" />
+import { DefaultQueryCompiler } from '../../query-compiler/default-query-compiler.js';
+const ID_WRAP_REGEX = /`/g;
+export class MysqlQueryCompiler extends DefaultQueryCompiler {
+    getCurrentParameterPlaceholder() {
+        return '?';
+    }
+    getLeftExplainOptionsWrapper() {
+        return '';
+    }
+    getExplainOptionAssignment() {
+        return '=';
+    }
+    getExplainOptionsDelimiter() {
+        return ' ';
+    }
+    getRightExplainOptionsWrapper() {
+        return '';
+    }
+    getLeftIdentifierWrapper() {
+        return '`';
+    }
+    getRightIdentifierWrapper() {
+        return '`';
+    }
+    sanitizeIdentifier(identifier) {
+        return identifier.replace(ID_WRAP_REGEX, '``');
+    }
+    visitCreateIndex(node) {
+        this.append('create ');
+        if (node.unique) {
+            this.append('unique ');
+        }
+        this.append('index ');
+        if (node.ifNotExists) {
+            this.append('if not exists ');
+        }
+        this.visitNode(node.name);
+        if (node.using) {
+            this.append(' using ');
+            this.visitNode(node.using);
+        }
+        if (node.table) {
+            this.append(' on ');
+            this.visitNode(node.table);
+        }
+        if (node.columns) {
+            this.append(' (');
+            this.compileList(node.columns);
+            this.append(')');
+        }
+        if (node.where) {
+            this.append(' ');
+            this.visitNode(node.where);
+        }
+    }
+}