Infer React SDK

A ready-made component and a headless hook for your own UI.

@pro6pp/infer-react0.1.0-beta.31MIT license
npmSource on GitHub

<Pro6PPInfer />

A styled React component for Pro6PP Infer API. Includes styling, keyboard navigation, and loading states.

Forwards its ref to the HTMLInputElement.

PropsPro6PPInferProps

From InferConfig in @pro6pp/infer-core
countryCountryCodeRequiredSets the API path

The country to perform address lookups in.

authKeystringAPI parameter

Your Pro6PP Authorization Key. Optional if using a proxy.

limitnumberAPI parameter

Number of suggestions to request per batch, at most 1000. 0 uses the default.

Default
20
languageLanguageCodeAPI parameter

Language code for response labels. Affects the language of returned address labels. Only applicable for BE country code.

sortSortOrderAPI parameter

Sort mixed address and place suggestions by relevance or distance. Distance sorting requires the Infer Extended (infer::location) capability. It measures from lat and lng when provided, otherwise from the approximate location of the request IP, and sorts by relevance when neither is available.

Default
'relevance'
latnumberAPI parameter

Latitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lng must also be provided.

lngnumberAPI parameter

Longitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lat must also be provided.

typesInferTypes

Suggestion types to request. Omit this to preserve the address-only default.

apiUrlstring

If provided, this URL is used as the API endpoint. The query params are appended, including country in lowercase.

  • If not provided, the SDK defaults to 'https://api.pro6pp.nl/v2/infer/{country}'.
fetcherFetcher

Custom fetch implementation for network requests.

Default
globalThis.fetch
debounceMsnumber

The delay in milliseconds before performing the API search. Note: A lower bound of 50ms is enforced to protect API stability.

Default
150
maxRetriesnumber

Maximum number of retry attempts after a network error or a 5xx or 429 response. Valid range: 0 to 10.

Default
0
onStateChange(state: InferState) => void

Callback triggered whenever the internal state (suggestions, loading status, etc.) updates.

onSelect(selection: AddressValue | string | null) => void

Callback triggered when an address selection completes or is cleared. Receives the AddressValue of the selected address, or its label as a string when the selection has no structured value. Receives null when the user edits a completed selection or selects a place after a structured address. Partial selections, such as a city or street, do not trigger it.

onPlaceSelect(selection: PlaceValue | null) => void

Callback triggered when a point of interest is selected, or with null when the user edits the selected place or selects an address instead.

From UseInferConfig in @pro6pp/infer-react
initialValueAddressValue

Initial address value to pre-fill the state with. Pre-filling does not call onSelect or onStateChange.

From Pro6PPInferProps in @pro6pp/infer-react
classNamestring

Optional CSS class for the wrapper div.

styleReact.CSSProperties

Optional inline styles for the wrapper div.

inputPropsReact.InputHTMLAttributes<HTMLInputElement>

Attributes to pass directly to the underlying input element. className is added to pro6pp-input, onChange, onKeyDown and onFocus run after the component's own handlers, and value is ignored because the component controls it.

placeholderstring

Custom placeholder text.

Default
'Start typing an address...'
renderItem(item: InferResult, isActive: boolean) => React.ReactNode

A custom render function for individual suggestion items.

disableDefaultStylesboolean

If true, prevents the default CSS theme from being injected.

Default
false
noResultsTextstring

The text to show when no results are found.

Default
'No results found'
loadingTextstring

The text to show on the bottom loading indicator.

Default
'Loading more...'
searchingTextstring

Text displayed while the initial search is pending. Defaults to Searching....

clearInputLabelstring

Accessible name for the clear button. Defaults to Clear input.

renderNoResults(state: InferState) => React.ReactNode

A custom render function for the "no results" state.

showClearButtonboolean

If true, shows a clear button when the input is not empty.

Default
true

useInfer

TypeScript
function useInfer(config: UseInferConfig): { state, core, inputProps, selectItem, setValue, setPlace, loadMore }

A headless React hook that provides the logic for address search using the Infer API.

config UseInferConfigThe engine configuration (authKey, country, etc.).
ReturnsAn object containing the current state, the core instance, and pre-bound input props.

Returns

stateInferState

The current UI state (suggestions, loading status, query, value, etc.).

coreInferCore

The raw InferCore instance for manual control.

inputProps{ value: string; onChange: (e: React.ChangeEvent<HTMLInputElement>) => void; onKeyDown: (e: React.KeyboardEvent<HTMLInputElement>) => void; }

Pre-configured event handlers to spread onto an <input /> element.

selectItem(item: InferResult | string) => boolean

Manually select a specific suggestion.

setValue(address: AddressValue) => void

Programmatically set the address value.

setPlace(place: PlaceValue) => void

Programmatically set a selected place value.

loadMore() => void

Load more results.

CSS classes

18 classes
ClassDescription
.pro6pp-wrapperThe container element wrapping the input and dropdown.
.pro6pp-inputThe input element itself.
.pro6pp-input-addonsThe container for the controls inside the input, such as the clear button.
.pro6pp-clear-buttonThe button that clears the input.
.pro6pp-dropdownThe panel containing the suggestion list and the loader.
.pro6pp-listThe <ul> list containing the suggestions.
.pro6pp-itemA single suggestion item (<li>).
.pro6pp-item--activeThe currently highlighted item (for keyboard navigation).
.pro6pp-item__labelThe main text/label of a suggestion.
.pro6pp-item--placeAn item for a point of interest rather than an address.
.pro6pp-item__label--matchThe part of a label that matches the query.
.pro6pp-item--fuzzyAn item for a close match rather than an exact one.
.pro6pp-item__label--unmatchedThe rest of the label.
.pro6pp-item__subtitleThe secondary text (e.g., city or result count).
.pro6pp-item__chevronThe icon indicating a folder/expandable result.
.pro6pp-no-resultsThe message shown while searching or when no suggestions are found.
.pro6pp-loader-itemThe element containing the loading spinner and text.
.pro6pp-mini-spinnerThe spinner icon inside the loader item.

Also exported

Re-exported from @pro6pp/infer-core.

INFER_PLACES_COUNTRIESreadonly ["NL", "BE", "DE", "FR", "AT", "ES", "DK", "LU", "IT"]

Countries currently supported by the Infer API for place suggestions.

getOrderedItems(state)→ InferResult[]

Returns suggestions in the order intended for display and keyboard navigation. Mixed and place responses provide the ranked order in suggestions. If that list is empty, fall back to the separate category arrays.

state InferState
supportsInferPlaces(country)→ boolean

Returns whether the Infer API supports place suggestions for a country. Country codes are compared case-insensitively after trimming whitespace.

country string

Types

Pro6PPInferPropsinterface

Props for the Pro6PPInfer component.

authKeystring

Your Pro6PP Authorization Key. Optional if using a proxy.

countryCountryCodeRequired

The country to perform address lookups in.

apiUrlstring

If provided, this URL is used as the API endpoint. The query params are appended, including country in lowercase.

  • If not provided, the SDK defaults to 'https://api.pro6pp.nl/v2/infer/{country}'.
fetcherFetcher

Custom fetch implementation for network requests.

Default
globalThis.fetch
limitnumber

Number of suggestions to request per batch, at most 1000. 0 uses the default.

Default
20
debounceMsnumber

The delay in milliseconds before performing the API search. Note: A lower bound of 50ms is enforced to protect API stability.

Default
150
maxRetriesnumber

Maximum number of retry attempts after a network error or a 5xx or 429 response. Valid range: 0 to 10.

Default
0
languageLanguageCode

Language code for response labels. Affects the language of returned address labels. Only applicable for BE country code.

sortSortOrder

Sort mixed address and place suggestions by relevance or distance. Distance sorting requires the Infer Extended (infer::location) capability. It measures from lat and lng when provided, otherwise from the approximate location of the request IP, and sorts by relevance when neither is available.

Default
'relevance'
latnumber

Latitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lng must also be provided.

lngnumber

Longitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lat must also be provided.

typesInferTypes

Suggestion types to request. Omit this to preserve the address-only default.

onStateChange(state: InferState) => void

Callback triggered whenever the internal state (suggestions, loading status, etc.) updates.

onSelect(selection: AddressValue | string | null) => void

Callback triggered when an address selection completes or is cleared. Receives the AddressValue of the selected address, or its label as a string when the selection has no structured value. Receives null when the user edits a completed selection or selects a place after a structured address. Partial selections, such as a city or street, do not trigger it.

onPlaceSelect(selection: PlaceValue | null) => void

Callback triggered when a point of interest is selected, or with null when the user edits the selected place or selects an address instead.

initialValueAddressValue

Initial address value to pre-fill the state with. Pre-filling does not call onSelect or onStateChange.

classNamestring

Optional CSS class for the wrapper div.

styleReact.CSSProperties

Optional inline styles for the wrapper div.

inputPropsReact.InputHTMLAttributes<HTMLInputElement>

Attributes to pass directly to the underlying input element. className is added to pro6pp-input, onChange, onKeyDown and onFocus run after the component's own handlers, and value is ignored because the component controls it.

placeholderstring

Custom placeholder text.

Default
'Start typing an address...'
renderItem(item: InferResult, isActive: boolean) => React.ReactNode

A custom render function for individual suggestion items.

disableDefaultStylesboolean

If true, prevents the default CSS theme from being injected.

Default
false
noResultsTextstring

The text to show when no results are found.

Default
'No results found'
loadingTextstring

The text to show on the bottom loading indicator.

Default
'Loading more...'
searchingTextstring

Text displayed while the initial search is pending. Defaults to Searching....

clearInputLabelstring

Accessible name for the clear button. Defaults to Clear input.

renderNoResults(state: InferState) => React.ReactNode

A custom render function for the "no results" state.

showClearButtonboolean

If true, shows a clear button when the input is not empty.

Default
true
UseInferConfiginterface

Extended configuration for the React hook.

authKeystring

Your Pro6PP Authorization Key. Optional if using a proxy.

countryCountryCodeRequired

The country to perform address lookups in.

apiUrlstring

If provided, this URL is used as the API endpoint. The query params are appended, including country in lowercase.

  • If not provided, the SDK defaults to 'https://api.pro6pp.nl/v2/infer/{country}'.
fetcherFetcher

Custom fetch implementation for network requests.

Default
globalThis.fetch
limitnumber

Number of suggestions to request per batch, at most 1000. 0 uses the default.

Default
20
debounceMsnumber

The delay in milliseconds before performing the API search. Note: A lower bound of 50ms is enforced to protect API stability.

Default
150
maxRetriesnumber

Maximum number of retry attempts after a network error or a 5xx or 429 response. Valid range: 0 to 10.

Default
0
languageLanguageCode

Language code for response labels. Affects the language of returned address labels. Only applicable for BE country code.

sortSortOrder

Sort mixed address and place suggestions by relevance or distance. Distance sorting requires the Infer Extended (infer::location) capability. It measures from lat and lng when provided, otherwise from the approximate location of the request IP, and sorts by relevance when neither is available.

Default
'relevance'
latnumber

Latitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lng must also be provided.

lngnumber

Longitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lat must also be provided.

typesInferTypes

Suggestion types to request. Omit this to preserve the address-only default.

onStateChange(state: InferState) => void

Callback triggered whenever the internal state (suggestions, loading status, etc.) updates.

onSelect(selection: AddressValue | string | null) => void

Callback triggered when an address selection completes or is cleared. Receives the AddressValue of the selected address, or its label as a string when the selection has no structured value. Receives null when the user edits a completed selection or selects a place after a structured address. Partial selections, such as a city or street, do not trigger it.

onPlaceSelect(selection: PlaceValue | null) => void

Callback triggered when a point of interest is selected, or with null when the user edits the selected place or selects an address instead.

initialValueAddressValue

Initial address value to pre-fill the state with. Pre-filling does not call onSelect or onStateChange.

AddressSuggestioninterface

A regular address or partial-address suggestion.

labelstringRequired

The text to display in the UI (e.g. "Main Street").

subtitlestring | null

Secondary information (e.g. city name when suggesting a street).

countnumber | string

Number of underlying results found for this suggestion.

exactboolean

False for close (fuzzy) matches that top up the exact matches.

matched_valuestring | null

The lowercase name the fuzzy pass matched, for close matches.

diff_positionsnumber[] | null

0-based query positions that differ from the match, for close matches.

valueAddressValue | string

The actual address data, when this result completes an address.

type'address'

Address suggestions may omit this field, as in existing API responses.

AddressValueinterface

The standardized address object returned upon a successful final selection.

streetstringRequired

The name of the street.

citystringRequired

The name of the city/locality.

latnumber | null

Latitude of the address location.

lngnumber | null

Longitude of the address location.

street_numberstring | number

The street number.

postcodestring

The postal code.

additionstring | null

The street number addition or suffix.

[key: string]unknown

Allow for extra fields if API expands.

CountryCodetype

Supported ISO 3166-1 alpha-2 country codes.

TypeScript
type CountryCode = 'NL'
  | 'DE'
  | 'BE'
  | 'AT'
  | 'DK'
  | 'CH'
  | 'LU'
  | 'FR'
  | 'ES'
  | 'GB'
  | 'IT'
  | (string & {});
Fetchertype

Custom fetch implementation, compatible with the Web Fetch API.

Custom fetch implementation, compatible with the Web Fetch API. Useful for Node.js environments or proxying requests.

TypeScript
type Fetcher = (input: RequestInfo
  | URL, init?: RequestInit) => Promise<Response>;
InferConfiginterface

Configuration options for the Infer engine.

authKeystring

Your Pro6PP Authorization Key. Optional if using a proxy.

countryCountryCodeRequired

The country to perform address lookups in.

apiUrlstring

If provided, this URL is used as the API endpoint. The query params are appended, including country in lowercase.

  • If not provided, the SDK defaults to 'https://api.pro6pp.nl/v2/infer/{country}'.
fetcherFetcher

Custom fetch implementation for network requests.

Default
globalThis.fetch
limitnumber

Number of suggestions to request per batch, at most 1000. 0 uses the default.

Default
20
debounceMsnumber

The delay in milliseconds before performing the API search. Note: A lower bound of 50ms is enforced to protect API stability.

Default
150
maxRetriesnumber

Maximum number of retry attempts after a network error or a 5xx or 429 response. Valid range: 0 to 10.

Default
0
languageLanguageCode

Language code for response labels. Affects the language of returned address labels. Only applicable for BE country code.

sortSortOrder

Sort mixed address and place suggestions by relevance or distance. Distance sorting requires the Infer Extended (infer::location) capability. It measures from lat and lng when provided, otherwise from the approximate location of the request IP, and sorts by relevance when neither is available.

Default
'relevance'
latnumber

Latitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lng must also be provided.

lngnumber

Longitude of the origin used for distance sorting, sent only when sort is 'distance'. When provided, lat must also be provided.

typesInferTypes

Suggestion types to request. Omit this to preserve the address-only default.

onStateChange(state: InferState) => void

Callback triggered whenever the internal state (suggestions, loading status, etc.) updates.

onSelect(selection: AddressValue | string | null) => void

Callback triggered when an address selection completes or is cleared. Receives the AddressValue of the selected address, or its label as a string when the selection has no structured value. Receives null when the user edits a completed selection or selects a place after a structured address. Partial selections, such as a city or street, do not trigger it.

onPlaceSelect(selection: PlaceValue | null) => void

Callback triggered when a point of interest is selected, or with null when the user edits the selected place or selects an address instead.

InferPlacesCountryCodetype
TypeScript
type InferPlacesCountryCode = (typeof INFER_PLACES_COUNTRIES)[number];
InferResulttype

A single item in the suggestion list.

TypeScript
type InferResult = AddressSuggestion
  | PlaceSuggestion;
InferStateinterface

The complete UI state managed by InferCore.

querystringRequired

The current text value of the search input.

stageStage | nullRequired

The current logical stage of the address lookup.

citiesInferResult[]Required

List of city suggestions (used in mixed stage).

streetsInferResult[]Required

List of street suggestions (used in mixed stage).

suggestionsInferResult[]Required

General list of suggestions for the current stage.

placesPlaceSuggestion[]Required

Place suggestions: the separate places list of the API response, or otherwise the place suggestions in suggestions.

isValidbooleanRequired

Flag indicating if the current selection is complete and valid.

valueAddressValue | nullRequired

The selected address value, otherwise null (places use selectedPlace).

selectedPlacePlaceValue | nullRequired

The selected place object, otherwise null.

isErrorbooleanRequired

Flag indicating if the last API request failed.

isLoadingbooleanRequired

Flag indicating if a network request is currently in progress.

hasMorebooleanRequired

Flag indicating if more results are available to load.

selectedSuggestionIndexnumberRequired

The index of the currently highlighted suggestion.

  • 0 to n: An item is highlighted via keyboard navigation.
  • -1: No item is highlighted.
InferTypestype

The kinds of suggestions requested from the Infer API.

The kinds of suggestions requested from the Infer API.

When omitted, the API keeps its address-only default.

TypeScript
type InferTypes = 'address'
  | 'place'
  | 'address,place';
LanguageCodetype

Supported language codes for address labels.

TypeScript
type LanguageCode = 'nl'
  | 'fr'
  | 'de'
  | (string & {});
PlaceSuggestioninterface

A suggestion that represents a point of interest rather than an address.

labelstringRequired

The text to display in the UI (e.g. "Main Street").

subtitlestring | null

Secondary information (e.g. city name when suggesting a street).

countnumber | string

Number of underlying results found for this suggestion.

exactboolean

False for close (fuzzy) matches that top up the exact matches.

matched_valuestring | null

The lowercase name the fuzzy pass matched, for close matches.

diff_positionsnumber[] | null

0-based query positions that differ from the match, for close matches.

type'place'Required

Marks the suggestion as a point of interest.

valuePlaceValueRequired

The place data.

PlaceValueinterface

A point of interest returned by the Infer API.

place_idstringRequired

Stable identifier of the place in the source dataset.

namestringRequired

Display name of the place.

categorystringRequired

Primary place category.

formatted_addressstring | nullRequired

Human-readable address, when available.

streetstring | nullRequired

Street name, when available.

street_numbernumber | nullRequired

Street number, when available.

additionstring | nullRequired

Street number addition, when available.

postcodestring | nullRequired

Postal code, when available.

citystring | nullRequired

City name, when available.

latnumberRequired

Latitude of the place.

lngnumberRequired

Longitude of the place.

SortOrdertype

The ordering applied to mixed address and place suggestions.

TypeScript
type SortOrder = 'relevance'
  | 'distance';
Stagetype

The current step in the address inference process.

The current step in the address inference process.

  • empty: No input yet.
  • mixed: User is prompted to choose between cities and streets.
  • place: User is selecting a point of interest.
  • street: User is selecting a street.
  • city: User is selecting a city.
  • postcode: User is entering a postcode.
  • street_number: User is entering a street number.
  • street_number_first: Specialized mode where number is entered before street.
  • addition: Selecting a street number addition (e.g., 'A', 'III').
  • direct: Direct address hit (often via postcode).
  • final: A complete, valid address has been identified.
TypeScript
type Stage = 'empty'
  | 'mixed'
  | 'place'
  | 'street'
  | 'city'
  | 'postcode'
  | 'street_number'
  | 'street_number_first'
  | 'addition'
  | 'direct'
  | 'final';