@sequeljs/ast/dist/es/managers/TreeManager.js

A SQL AST manager for JavaScript

import SQLString from '../collectors/SQLString';
import EngineNotSetError from '../errors/EngineNotSetError';
import VisitorNotSetError from '../errors/VisitorNotSetError';
import SequelAST from '../SequelAST';
class TreeManager {
    constructor(ast) {
        this.ctx = null;
        this.ast = ast;
    }
    toSQL(engine = undefined) {
        let currentEngine = engine;
        if (typeof currentEngine === 'undefined') {
            currentEngine = SequelAST.engine;
        }
        if (!currentEngine) {
            throw new EngineNotSetError();
        }
        if (!currentEngine.connection.visitor) {
            throw new VisitorNotSetError();
        }
        let collector;
        collector = new SQLString();
        collector = currentEngine.connection.visitor.accept(this.ast, collector);
        return collector.value;
    }
    where(expr) {
        this.ctx.wheres.push(expr);
        return this;
    }
}
export default TreeManager;
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