feat(helper): remove previousPage and nextPage (#6565)

These functions are redundant with the setPage and setQueryParameter/s/setState functions and aren't used in InstantSearch

BREAKING CHANGE: remove usage of helper.previousPage, helper.nextPage and use setPage, setState or setQueryParameter instead

Author: Haroenv

packages/algoliasearch-helper/documentation-src/content/reference.md

@@ -62,10 +62,6 @@ Finally, you can retrieve if there is an on-going search with `hasPendingRequest
 
 {{> jsdoc jsdoc/helper/setPage}}
 
-{{> jsdoc jsdoc/helper/nextPage}}
-
-{{> jsdoc jsdoc/helper/previousPage}}
-
 {{> jsdoc jsdoc/helper/getPage}}
 
 ### Query parameters

packages/algoliasearch-helper/index.d.ts

@@ -284,8 +284,6 @@ declare namespace algoliasearchHelper {
     toggleFacetExclusion(facet: string, value: string): this;
     toggleFacetRefinement(facet: string, value: string): this;
     toggleTag(tag: string): this;
-    nextPage(): this;
-    previousPage(): this;
     setPage(page: number): this;
     setQueryParameter<SearchParameter extends keyof PlainSearchParameters>(
       parameter: SearchParameter,

packages/algoliasearch-helper/src/algoliasearch.helper.js

@@ -989,34 +989,6 @@ AlgoliaSearchHelper.prototype.toggleTag = function (tag) {
   return this;
 };
 
-/**
- * Increments the page number by one.
- * @return {AlgoliaSearchHelper} Method is chainable, it returns itself
- * @fires change
- * @chainable
- * @example
- * helper.setPage(0).nextPage().getPage();
- * // returns 1
- */
-AlgoliaSearchHelper.prototype.nextPage = function () {
-  var page = this.state.page || 0;
-  return this.setPage(page + 1);
-};
-
-/**
- * Decrements the page number by one.
- * @fires change
- * @return {AlgoliaSearchHelper} Method is chainable, it returns itself
- * @chainable
- * @example
- * helper.setPage(1).previousPage().getPage();
- * // returns 0
- */
-AlgoliaSearchHelper.prototype.previousPage = function () {
-  var page = this.state.page || 0;
-  return this.setPage(page - 1);
-};
-
 /**
  * Updates the current page.
  * @function

packages/algoliasearch-helper/test/spec/algoliasearch.helper/pages.js

@@ -4,7 +4,7 @@ var algoliasearchHelper = require('../../../index');
 
 var fakeClient = {};
 
-test('setChange should change the current page', function () {
+test('setPage should change the current page', function () {
   var helper = algoliasearchHelper(fakeClient, null, null);
 
   expect(helper.getPage()).toBeUndefined();
@@ -14,40 +14,6 @@ test('setChange should change the current page', function () {
   expect(helper.getPage()).toBe(3);
 });
 
-test('nextPage should increment the page by one', function () {
-  var helper = algoliasearchHelper(fakeClient, null, null);
-
-  expect(helper.getPage()).toBeUndefined();
-
-  helper.nextPage();
-  helper.nextPage();
-  helper.nextPage();
-
-  expect(helper.getPage()).toBe(3);
-});
-
-test('previousPage should decrement the current page by one', function () {
-  var helper = algoliasearchHelper(fakeClient, null, null);
-
-  expect(helper.getPage()).toBeUndefined();
-
-  helper.setPage(3);
-
-  expect(helper.getPage()).toBe(3);
-
-  helper.previousPage();
-
-  expect(helper.getPage()).toBe(2);
-});
-
-test('previousPage should throw an error without a current page', function () {
-  var helper = algoliasearchHelper(fakeClient, null, null);
-
-  expect(function () {
-    helper.previousPage();
-  }).toThrow('Page requested below 0.');
-});
-
 test('pages should be reset if the mutation might change the number of pages', function () {
   var helper = algoliasearchHelper(fakeClient, '', {
     facets: ['facet1', 'f2'],