Added .aggs method to fluent API and improved query merger

dsl/src/aggregation.ts

@@ -24,11 +24,7 @@
 
 import * as t from './types'
 
-interface anyObject {
-  [key: string]: any
-}
-
-type aggsOptions = anyObject | string
+type aggsOptions = Record<string, any> | string
 
 function _A (...aggregations: any[]): any {
   return {
@@ -106,7 +102,7 @@ interface Aggregations {
 }
 
 const aggregations = {
-  get: function (target: unknown, name: string) {
+  get (target: unknown, name: string) {
     return {
       // add aggregations to a parent aggregation
       aggs (...aggregations: any[]): t.Aggregation {

dsl/src/fluent.ts

@@ -25,12 +25,13 @@
 /* eslint lines-between-class-members: 0 */
 
 import Q from './query'
+import A from './aggregation'
 import * as t from './types'
 
-const kState = Symbol('dsl-state')
-type nestedQFn = (f: Fluent) => Fluent
+const kState = Symbol('dsl-query-state')
+type nestedQFn = (f: FluentQ) => FluentQ
 
-class Fluent {
+class FluentQ {
   [kState]: Record<string, any>[]
   constructor () {
     this[kState] = []
@@ -257,6 +258,11 @@ class Fluent {
     this[kState].push(Q.size(s))
     return this
   }
+
+  aggs (...aggregations: Record<string, any>[]): this {
+    this[kState].push(A(...aggregations))
+    return this
+  }
 }
 
-export default Fluent
+export default FluentQ

dsl/src/query.ts

@@ -27,6 +27,7 @@ import deepMerge from 'deepmerge'
 import * as t from './types'
 
 function Q (...blocks: t.AnyQuery[]): Record<string, any> {
+  blocks = blocks.flat()
   const topLevelKeys = [
     'aggs',
     'collapse',
@@ -51,10 +52,10 @@ function Q (...blocks: t.AnyQuery[]): Record<string, any> {
     'version'
   ]
 
-  const queries = blocks.flat().filter(block => {
-    return !topLevelKeys.includes(Object.keys(block)[0])
-  })
-  const body: Record<string, any> = queries.length > 0 ? Q.bool(...queries) : {}
+  const queries = blocks.filter(block => !topLevelKeys.includes(Object.keys(block)[0]))
+  const body: Record<string, any> = queries.length === 1 && !isClause(queries[0]) && !isBool(queries[0])
+    ? { query: queries[0] }
+    : queries.length > 0 ? Q.bool(...queries) : {}
   for (const block of blocks) {
     const key = Object.keys(block)[0]
     if (topLevelKeys.includes(key)) {