hyperformula/typings/ConfigParams.d.ts

HyperFormula is a JavaScript engine for efficient processing of spreadsheet-like data and formulas

/**
 * @license
 * Copyright (c) 2025 Handsoncode. All rights reserved.
 */
import { ChooseAddressMapping } from './DependencyGraph/AddressMapping/ChooseAddressMappingPolicy';
import { DateTime, SimpleDate, SimpleDateTime, SimpleTime } from './DateTimeHelper';
import { Maybe } from './Maybe';
export interface ConfigParams {
    /**
     * When set to `true`, makes string comparison accent-sensitive.
     *
     * Applies only to comparison operators.
     *
     * For more information, see the [Types of operators guide](/guide/types-of-operators.md#comparing-strings).
     * @default false
     * @category String
     */
    accentSensitive: boolean;
    /**
     * When set to `true`, makes string comparison case-sensitive.
     *
     * Applies to comparison operators only.
     *
     * For more information, see the [Types of operators guide](/guide/types-of-operators.md#comparing-strings).
     * @default false
     * @category String
     */
    caseSensitive: boolean;
    /**
     * When set to `upper`, upper case sorts first.
     *
     * When set to `lower`, lower case sorts first.
     *
     * When set to `false`, uses the locale's default.
     *
     * For more information, see the [Types of operators guide](/guide/types-of-operators.md#comparing-strings).
     * @default 'lower'
     * @category String
     */
    caseFirst: 'upper' | 'lower' | 'false';
    /**
     * Sets the address mapping policy to be used.
     *
     * Built-in implementations:
     * - `DenseSparseChooseBasedOnThreshold`: sets the address mapping policy separately for each sheet, based on fill ratio.
     * - `AlwaysDense`: uses `DenseStrategy` for all sheets.
     * - `AlwaysSparse`: uses `SparseStrategy` for all sheets.
     *
     * For more information, see the [Performance guide](/guide/performance.md).
     * @default AlwaysDense
     * @category Engine
     */
    chooseAddressMappingPolicy: ChooseAddressMapping;
    /**
     * A generic parameter that can be used to pass data to custom functions.
     *
     * For more information, see the [Custom functions guide](/guide/custom-functions.md).
     * @default undefined
     * @category Engine
     */
    context: unknown;
    /**
     * Sets symbols that denote currency numbers.
     *
     * For more information, see the [Internationalization features guide](/guide/i18n-features.md).
     * @default ['$']
     * @category Number
     */
    currencySymbol: string[];
    /**
     * Sets the date formats accepted by the date-parsing function.
     *
     * A format must be specified as a string consisting of tokens and separators.
     *
     * Supported tokens:
     * - `DD` (day of month)
     * - `MM` (month as a number)
     * - `YYYY` (year as a 4-digit number)
     * - `YY` (year as a 2-digit number)
     *
     * Supported separators:
     * - `/` (slash)
     * - `-` (dash)
     * - `.` (dot)
     * - ` ` (empty space)
     *
     * Regardless of the separator specified in the format string, all of the above are accepted by the date-parsing function.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @default ['DD/MM/YYYY', 'DD/MM/YY']
     * @category Date and Time
     */
    dateFormats: string[];
    /**
     * Sets a separator character that separates procedure arguments in formulas.
     *
     * Must be different from [decimalSeparator](/api/interfaces/configparams.md#decimalseparator) and [thousandSeparator](/api/interfaces/configparams.md#thousandseparator).
     *
     * For more information, see the [Internationalization features guide](/guide/i18n-features.md).
     * @default ','
     * @category Formula Syntax
     */
    functionArgSeparator: string;
    /**
     * Sets a decimal separator used for parsing numerical literals.
     *
     * Can be one of the following:
     * - `.` (period)
     * - `,` (comma)
     *
     * Must be different from [thousandSeparator](/api/interfaces/configparams.md#thousandseparator) and [functionArgSeparator](/api/interfaces/configparams.md#functionargseparator).
     *
     * For more information, see the [Internationalization features guide](/guide/i18n-features.md).
     * @default '.'
     * @category Number
     */
    decimalSeparator: '.' | ',';
    /**
     * When set to `true`, formulas evaluating to `null` evaluate to `0` instead.
     * @default false
     * @category Engine
     */
    evaluateNullToZero: boolean;
    /**
     * Lists additional function plugins to be used by the formula interpreter.
     *
     * For more information, see the [Custom functions guide](/guide/custom-functions.md).
     * @default []
     * @category Formula Syntax
     */
    functionPlugins: any[];
    /**
     * When set to `true`, string comparison ignores punctuation.
     *
     * For more information, see the [Types of operators guide](/guide/types-of-operators.md#comparing-strings).
     * @default false
     * @category String
     */
    ignorePunctuation: boolean;
    /**
     * Sets a translation package for function and error names.
     *
     * For more information, see the [Localizing functions guide](/guide/localizing-functions.md).
     * @default 'enGB'
     * @category Formula Syntax
     */
    language: string;
    /**
     * Controls the set of whitespace characters that are allowed inside a formula.
     *
     * When set to `'standard'`, allows only SPACE (U+0020), CHARACTER TABULATION (U+0009), LINE FEED (U+000A), and CARRIAGE RETURN (U+000D) (compliant with OpenFormula Standard 1.3)
     *
     * When set to `'any'`, allows all whitespace characters that would be captured by the `\s` character class of the JavaScript regular expressions.
     * @default 'standard'
     * @category Formula Syntax
     */
    ignoreWhiteSpace: 'standard' | 'any';
    /**
     * Sets year 1900 as a leap year.
     *
     * For compatibility with Lotus 1-2-3 and Microsoft Excel, set this option to `true`.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md) and [nullDate](/api/interfaces/configparams.md#nulldate).
     * @default false
     * @category Date and Time
     */
    leapYear1900: boolean;
    /**
     * Sets your HyperFormula license key.
     *
     * To use HyperFormula on the GPLv3 license terms, set this option to `gpl-v3`.
     *
     * To use HyperFormula with your proprietary license, set this option to your valid license key string.
     *
     * For more information, go [here](/guide/license-key.md).
     * @default undefined
     * @category License
     */
    licenseKey: string;
    /**
     * Sets the locale for language-sensitive string comparison.
     *
     * Accepts **IETF BCP 47** language tags.
     *
     * For more information, see the [Internationalization features guide](/guide/i18n-features.md).
     * @default 'en'
     * @category String
     */
    localeLang: string;
    /**
     * When set to `true`, function criteria require whole cells to match the pattern.
     *
     * When set to `false`, function criteria require just a sub-word to match the pattern.
     * @default true
     * @category String
     */
    matchWholeCell: boolean;
    /**
     * Sets a column separator symbol for array notation.
     *
     * For more information, see the [Arrays guide](/guide/arrays.md).
     * @default ','
     * @category Formula Syntax
     */
    arrayColumnSeparator: ',' | ';';
    /**
     * Sets a row separator symbol for array notation.
     *
     * For more information, see the [Arrays guide](/guide/arrays.md).
     * @default ';'
     * @category Formula Syntax
     */
    arrayRowSeparator: ';' | '|';
    /**
     * Sets the maximum number of rows.
     * @default 40.000
     * @category Engine
     */
    maxRows: number;
    /**
     * Sets the maximum number of columns.
     * @default 18.278 (Columns A, B, ..., ZZZ)
     * @category Engine
     */
    maxColumns: number;
    /**
     * Internally, each date is represented as a number of days that passed since `nullDate`.
     *
     * This option sets a specific date from which that number of days is counted.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @default {year: 1899, month: 12, day: 30}
     * @category Date and Time
     */
    nullDate: SimpleDate;
    /**
     * Sets the interpretation of two-digit year values.
     *
     * Two-digit year values (`xx`) can either become `19xx` or `20xx`.
     *
     * If `xx` is less or equal to `nullYear`, two-digit year values become `20xx`.
     *
     * If `xx` is more than `nullYear`, two-digit year values become `19xx`.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @default 30
     * @category Date and Time
     */
    nullYear: number;
    /**
     * Sets a function that parses strings representing date-time into actual date-time values.
     *
     * The function should return a [DateTime](../globals.md#datetime) object or undefined.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @default defaultParseToDateTime
     * @category Date and Time
     */
    parseDateTime: (dateTimeString: string, dateFormat?: string, timeFormat?: string) => Maybe<DateTime>;
    /**
     * Sets how far two numerical values need to be from each other to be treated as non-equal.
     *
     * `a` and `b` are equal if all three of the following conditions are met:
     * - Both `a` and `b` are of the same sign
     * - `abs(a)` <= `(1+precisionEpsilon) * abs(b)`
     * - `abs(b)` <= `(1+precisionEpsilon) * abs(a)`
     *
     * Additionally, this option controls the snap-to-zero behavior for additions and subtractions:
     * - For `c=a+b`, if `abs(c)` <= `precisionEpsilon * abs(a)`, then `c` is set to `0`
     * - For `c=a-b`, if `abs(c)` <= `precisionEpsilon * abs(a)`, then `c` is set to `0`
     * @default 1e-13
     * @category Number
     */
    precisionEpsilon: number;
    /**
     * Sets the precision level of calculations' output.
     *
     * Internally, all arithmetic operations are performed using JavaScript's built-in numbers.
     * But when HyperFormula exports a cell's value, it rounds the output
     * to the `precisionRounding` number of significant digits.
     *
     * Setting `precisionRounding` too low can cause large numbers' imprecision
     * (for example, with `precisionRounding` set to `4`, 100005 becomes 100010).
     *
     * Setting precisionRounding too high will expose the floating-point calculation errors. For example, with `precisionRounding` set to `15`, `0.1 + 0.2` results in `0.3000000000000001`.
     * @default 10
     * @category Number
     */
    precisionRounding: number;
    /**
     * Sets a function that converts date-time values into strings.
     *
     * The function should return a string or undefined.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @default defaultStringifyDateTime
     * @category Date and Time
     */
    stringifyDateTime: (dateTime: SimpleDateTime, dateTimeFormat: string) => Maybe<string>;
    /**
     * Sets a function that converts time duration values into strings.
     *
     * The function should return a string or undefined.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @default defaultStringifyDuration
     * @category Date and Time
     */
    stringifyDuration: (time: SimpleTime, timeFormat: string) => Maybe<string>;
    /**
     * When set to `false`, no rounding happens, and numbers are equal if and only if they are of truly identical value.
     *
     * For more information, see [precisionEpsilon](/api/interfaces/configparams.md#precisionepsilon).
     * @default true
     * @category Number
     */
    smartRounding: boolean;
    /**
     * Sets the thousands' separator symbol for parsing numerical literals.
     *
     * Can be one of the following:
     * - empty
     * - `,` (comma)
     * - ` ` (empty space)
     *
     * Must be different from [decimalSeparator](/api/interfaces/configparams.md#decimalseparator) and [functionArgSeparator](/api/interfaces/configparams.md#functionargseparator).
     *
     * For more information, see the [Internationalization features guide](/guide/i18n-features.md).
     * @default ''
     * @category Number
     */
    thousandSeparator: '' | ',' | ' ' | '.';
    /**
     * Sets the time formats accepted by the time-parsing function.
     *
     * A format must be specified as a string consisting of at least two tokens separated by `:` (a colon).
     *
     * Supported tokens:
     * - `hh` (hours)
     * - `mm` (minutes)
     * - `ss`, `ss.s`, `ss.ss`, `ss.sss`, `ss.ssss`, etc. (seconds)
     *
     * The number of decimal places in the seconds token does not matter. All versions of the seconds token are equivalent in the context of parsing time values.
     * Regardless of the time format specified, the hours-minutes-seconds value may be followed by the AM/PM designator.
     *
     * For more information, see the [Date and time handling guide](/guide/date-and-time-handling.md).
     * @example
     * E.g., for `timeFormats = ['hh:mm:ss.sss']`, valid time strings include:
     * - `1:33:33`
     * - `1:33:33.3`
     * - `1:33:33.33`
     * - `1:33:33.333`
     * - `01:33:33`
     * - `1:33:33 AM`
     * - `1:33:33 PM`
     * - `1:33:33 am`
     * - `1:33:33 pm`
     * - `1:33:33AM`
     * - `1:33:33PM`
     * @default ['hh:mm', 'hh:mm:ss.sss']
     * @category Date and Time
     */
    timeFormats: string[];
    /**
     * When set to `true`, array arithmetic is enabled globally.
     *
     * When set to `false`, array arithmetic is enabled only inside array functions (`ARRAYFORMULA`, `FILTER`, and `ARRAY_CONSTRAIN`).
     *
     * For more information, see the [Arrays guide](/guide/arrays.md).
     * @default false
     * @category Engine
     */
    useArrayArithmetic: boolean;
    /**
     * When set to `true`, switches column search strategy from binary search to column index.
     *
     * Using column index improves efficiency of the `VLOOKUP` and `MATCH` functions, but increases memory usage.
     *
     * When searching with wildcards or regular expressions, column search strategy falls back to binary search (even with `useColumnIndex` set to `true`).
     *
     * For more information, see the [Performance guide](/guide/performance.md).
     * @default false
     * @category Engine
     */
    useColumnIndex: boolean;
    /**
     * When set to `true`, enables gathering engine statistics and timings.
     *
     * Useful for testing and benchmarking.
     * @default false
     * @category Engine
     */
    useStats: boolean;
    /**
     * Sets the number of elements kept in the undo history.
     *
     * For more information, see the [Undo-Redo guide](/guide/undo-redo.md).
     * @default 20
     * @category Undo and Redo
     */
    undoLimit: number;
    /**
     * When set to `true`, criteria in functions (SUMIF, COUNTIF, ...) are allowed to use regular expressions.
     * @default false
     * @category String
     */
    useRegularExpressions: boolean;
    /**
     * When set to `true`, criteria in functions (SUMIF, COUNTIF, ...) can use the `*` and `?` wildcards.
     * @default true
     * @category String
     */
    useWildcards: boolean;
}
export declare type ConfigParamsList = keyof ConfigParams;