From 9df7b1362ac3831a4d6eb627892c5073bc6e9d11 Mon Sep 17 00:00:00 2001
From: "Vitaliy V. Makeev" <w.makeev@gmail.com>
Date: Fri, 29 Jul 2022 08:57:50 +0500
Subject: [PATCH] test: add TS checker stuck test

---
 .../{expensive.test.ts => expensive1.test.ts} |   0
 test/model/expensive2.test.ts                 | 109 ++++++++++++++++++
 2 files changed, 109 insertions(+)
 rename test/model/{expensive.test.ts => expensive1.test.ts} (100%)
 create mode 100644 test/model/expensive2.test.ts

diff --git a/test/model/expensive.test.ts b/test/model/expensive1.test.ts
similarity index 100%
rename from test/model/expensive.test.ts
rename to test/model/expensive1.test.ts
diff --git a/test/model/expensive2.test.ts b/test/model/expensive2.test.ts
new file mode 100644
index 0000000..8d39e8e
--- /dev/null
+++ b/test/model/expensive2.test.ts
@@ -0,0 +1,109 @@
+// ВНИМАНИЕ!
+// Это очень тяжелый тест. Он "убивает" производительность чекера TS.
+// После каждого изменения чекер задумывается на несколько секунд.
+
+// FIXME Можно что-то сделать с этим? И вооще как понять в чем причина тормозов?
+
+import type {
+  Agent,
+  Assortment,
+  Counterparty,
+  CustomerOrder,
+  CustomerOrderPosition,
+  Expand,
+  MetaType,
+  Organization,
+  Product,
+  State
+} from '../../src'
+import { flatMap, map } from '../../src/array'
+import fp from 'lodash/fp'
+import _ from 'lodash'
+
+const order = {} as CustomerOrder
+
+order.agent.meta.type
+order.agent.meta.href
+
+const expandedOrder = {} as Expand<
+  CustomerOrder,
+  'agent,state,positions.assortment.supplier'
+>
+
+//#region Такой вариант расширения не работает с .map (тип обрезается)
+// const expandedOrder = {} as CustomerOrder & {
+//   agent: Counterparty | Organization
+// } & { state: State<MetaType> | undefined } & {
+//   positions: {
+//     rows: CustomerOrderPosition[]
+//   }
+// } & {
+//   positions: {
+//     rows: Array<{
+//       assortment: Product
+//     }>
+//   }
+// } & {
+//   positions: {
+//     rows: Array<{
+//       assortment: { supplier: Counterparty | Organization }
+//     }>
+//   }
+// }
+//#endregion
+
+expandedOrder.agent.name
+expandedOrder.state?.stateType
+expandedOrder.positions.rows[0].quantity
+expandedOrder.positions.rows[0].assortment.name
+expandedOrder.positions.rows[0].assortment.supplier?.companyType
+
+//#region Нативный map - медленно!!!
+// const productNames = expandedOrder.positions.rows.map(row => {
+//   return row.assortment.name
+// })
+//#endregion
+
+//#region Обернутый map - быстро
+const productNames3 = map(expandedOrder.positions.rows, row => {
+  return row.assortment.name
+})
+//#endregion
+
+//#region Обернутый flatMap - быстро
+const productNames4 = flatMap(expandedOrder.positions.rows, row => {
+  return [row.assortment]
+})
+
+productNames4[0].alcoholic
+//#endregion
+
+//#region lodash.fp.map - быстро
+const productNames5 = fp.map((row: { assortment: { name: string } }) => {
+  return row.assortment.name
+})(expandedOrder.positions.rows)
+//#endregion
+
+//#region lodash.map
+const productNames6 = _.map(expandedOrder.positions.rows, row => {
+  return row.assortment.name
+})
+//#endregion
+
+//#region lodash.map - медленно !!!
+// const productNames6 = _(expandedOrder.positions.rows)
+//   .map(row => {
+//     return row.assortment.name
+//   })
+//   .flatMap(it => it.trim())
+//#endregion
+
+//#region sample 3 (map через цикл - быстро)
+const productNames = []
+
+for (const row of expandedOrder.positions.rows) {
+  productNames.push(row.assortment.name)
+}
+
+productNames
+//#endregion