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Showing content from https://github.com/bootstrap-vue/bootstrap-vue/commit/a8e2e56 below:

fix prop type checking for `value` prop (#4168) · bootstrap-vue/bootstrap-vue@a8e2e56 · GitHub

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lines changed Original file line number Diff line number Diff line change


 @@ -253,7 +253,7 @@ assistive technologies.

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 With inputs of type file, normally the `v-model` is uni-directional (meaning you cannot pre-set the

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 selected files). However, you can clear the file input's selected files by setting the `v-model` to

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-
 either `null`, an empty string `''`, or an empty array `[]`).

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+
 either `null` (for single mode) or an empty array `[]` (for multiple/directory mode).

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 Alternatively, `<b-form-file>` provides a `reset()` method that can be called to clear the file

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 input. To take advantage of the `reset()` method, you will need to obtain a reference to the

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 @@ -1,8 +1,9 @@

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 import Vue from '../../utils/vue'

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 import { from as arrayFrom, isArray, concat } from '../../utils/array'

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 import { getComponentConfig } from '../../utils/config'

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-
 import { isFunction } from '../../utils/inspect'

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+
 import { isFile, isFunction, isUndefinedOrNull } from '../../utils/inspect'

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 import { File } from '../../utils/safe-types'

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+
 import { warn } from '../../utils/warn'

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 import formCustomMixin from '../../mixins/form-custom'

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 import formMixin from '../../mixins/form'

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 import formStateMixin from '../../mixins/form-state'


 @@ -27,7 +28,21 @@ export const BFormFile = /*#__PURE__*/ Vue.extend({

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},

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 value: {

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 type: [File, Array],

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-
 default: null

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+
 default: null,

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+
 validator: val => {

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+
 /* istanbul ignore next */

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+
 if (val === '') {

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 warn(

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+
 `${NAME} - setting value/v-model to an empty string for reset is deprecated. Set to 'null' instead`

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+
 )

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 return true

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 }

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 return (

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+
 isUndefinedOrNull(val) ||

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 isFile(val) ||

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 (isArray(val) && (val.length === 0 || val.every(isFile)))

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+
 )

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+
 }

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},

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 accept: {

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 type: String,

Original file line number Diff line number Diff line change


 @@ -340,7 +340,7 @@ describe('form-file', () => {

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 const wrapper = mount(BFormFile, {

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 propsData: {

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 id: 'foo',

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-
 value: ''

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+
 value: null

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})

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 const file1 = new File(['foo'], 'foo.txt', {


 @@ -358,8 +358,7 @@ describe('form-file', () => {

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 wrapper.setProps({ value: null })

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 await waitNT(wrapper.vm)

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-
 expect(wrapper.emitted('input').length).toEqual(2)

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-
 expect(wrapper.emitted('input')[1][0]).toEqual(null)

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+
 expect(wrapper.emitted('input').length).toEqual(1)

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 wrapper.destroy()

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})

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 @@ -13,7 +13,7 @@

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 "props": [

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 "prop": "value",

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-
 "description": "The current value of the file input. Will be an array if multiple or directory is set. Can be set to null or empty array to reset the file input"

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+
 "description": "The current value of the file input. Will be a single File object or an array of File objects (if multiple or directory is set). Can be set to null, or an empty array to reset the file input"

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},

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 "prop": "accept",

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 @@ -1,5 +1,6 @@

1 1


 import { isArray } from './array'

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 import { isObject, isPlainObject } from './object'

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+
 import { File } from './safe-types'

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 // --- Convenience inspection utilities ---

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 @@ -29,6 +30,8 @@ export const isDate = val => val instanceof Date

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 export const isEvent = val => val instanceof Event

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+
 export const isFile = val => val instanceof File

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 export const isRegExp = val => toRawType(val) === 'RegExp'

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 export const isPromise = val =>

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