From 2231349c302a089cc556614ff562b02a729b1e77 Mon Sep 17 00:00:00 2001
From: Marco Moretti <marcomoretti0103@gmail.com>
Date: Fri, 24 Apr 2020 10:36:41 +0200
Subject: [PATCH] [Autocomplete] Remove startAfter props (#20729)

---
 .../components/autocomplete/autocomplete.md   |  1 -
 .../src/useAutocomplete/useAutocomplete.d.ts  |  1 -
 .../src/useAutocomplete/useAutocomplete.js    |  5 ----
 .../useAutocomplete/useAutocomplete.test.js   | 28 -------------------
 4 files changed, 35 deletions(-)

diff --git a/docs/src/pages/components/autocomplete/autocomplete.md b/docs/src/pages/components/autocomplete/autocomplete.md
index fed08b4f67f927..d3c3e81eaa4247 100644
--- a/docs/src/pages/components/autocomplete/autocomplete.md
+++ b/docs/src/pages/components/autocomplete/autocomplete.md
@@ -166,7 +166,6 @@ import { createFilterOptions } from '@material-ui/lab/Autocomplete';
   - `config.ignoreCase` (*Boolean* [optional]): Defaults to `true`. Lowercase everything.
   - `config.limit` (*Number* [optional]): Default to null. Limit the number of suggested options to be shown. For example, if `config.limit` is `100`, only the first `100` matching options are shown. It can be useful if a lot of options match and virtualization wasn't set up.
   - `config.matchFrom` (*'any' | 'start'* [optional]): Defaults to `'any'`.
-  - `config.startAfter`(*Number* [optional]): Default to `0`. Show the suggested options only after a certain number of letters
   - `config.stringify` (*Func* [optional]): Controls how an option is converted into a string so that it can be matched against the input text fragment.
   - `config.trim` (*Boolean* [optional]): Defaults to `false`. Remove trailing spaces.
 
diff --git a/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.d.ts b/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.d.ts
index 4d6132cdbf1f1e..2c33f552ccce42 100644
--- a/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.d.ts
+++ b/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.d.ts
@@ -5,7 +5,6 @@ export interface CreateFilterOptionsConfig<T> {
   ignoreCase?: boolean;
   limit?: number;
   matchFrom?: 'any' | 'start';
-  startAfter?: number;
   stringify?: (option: T) => string;
   trim?: boolean;
 }
diff --git a/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.js b/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.js
index f53b23e23b8d4c..76a1fb32dc2a60 100644
--- a/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.js
+++ b/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.js
@@ -21,7 +21,6 @@ export function createFilterOptions(config = {}) {
     ignoreCase = true,
     limit,
     matchFrom = 'any',
-    startAfter = 0,
     stringify,
     trim = false,
   } = config;
@@ -35,10 +34,6 @@ export function createFilterOptions(config = {}) {
       input = stripDiacritics(input);
     }
 
-    if (startAfter > 0 && input.length <= startAfter) {
-      return [];
-    }
-
     const filteredOptions = options.filter((option) => {
       let candidate = (stringify || getOptionLabel)(option);
       if (ignoreCase) {
diff --git a/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.test.js b/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.test.js
index 3c973a8e7260da..10946c31545010 100644
--- a/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.test.js
+++ b/packages/material-ui-lab/src/useAutocomplete/useAutocomplete.test.js
@@ -24,34 +24,6 @@ describe('createFilterOptions', () => {
     expect(filterOptions(options, { inputValue: 'a', getOptionLabel })).to.deep.equal([options[0]]);
   });
 
-  describe('option: startAfter', () => {
-    it('start to search only after the second letter', () => {
-      const filterOptions = createFilterOptions({ startAfter: 2 });
-
-      const getOptionLabel = (option) => option.name;
-      const options = [
-        {
-          id: '1234',
-          name: 'cat',
-        },
-        {
-          id: '5678',
-          name: 'dog',
-        },
-        {
-          id: '9abc',
-          name: 'emu',
-        },
-      ];
-
-      expect(filterOptions(options, { inputValue: 'c', getOptionLabel })).to.deep.equal([]);
-      expect(filterOptions(options, { inputValue: 'ca', getOptionLabel })).to.deep.equal([]);
-      expect(filterOptions(options, { inputValue: 'cat', getOptionLabel })).to.deep.equal([
-        options[0],
-      ]);
-    });
-  });
-
   describe('option: limit', () => {
     it('limits the number of suggested options to be shown', () => {
       const filterOptions = createFilterOptions({ limit: 2 });