@ajsf/core
Version:
Angular JSON Schema Form builder core
380 lines • 43 kB
JavaScript
import { hasValue, inArray, isArray, isDefined, isEmpty, isMap, isObject, isSet, isString } from './validator.functions';
/**
* Utility function library:
*
* addClasses, copy, forEach, forEachCopy, hasOwn, mergeFilteredObject,
* uniqueItems, commonItems, fixTitle, toTitleCase
*/
/**
* 'addClasses' function
*
* Merges two space-delimited lists of CSS classes and removes duplicates.
*
* // {string | string[] | Set<string>} oldClasses
* // {string | string[] | Set<string>} newClasses
* // {string | string[] | Set<string>} - Combined classes
*/
export function addClasses(oldClasses, newClasses) {
const badType = i => !isSet(i) && !isArray(i) && !isString(i);
if (badType(newClasses)) {
return oldClasses;
}
if (badType(oldClasses)) {
oldClasses = '';
}
const toSet = i => isSet(i) ? i : isArray(i) ? new Set(i) : new Set(i.split(' '));
const combinedSet = toSet(oldClasses);
const newSet = toSet(newClasses);
newSet.forEach(c => combinedSet.add(c));
if (isSet(oldClasses)) {
return combinedSet;
}
if (isArray(oldClasses)) {
return Array.from(combinedSet);
}
return Array.from(combinedSet).join(' ');
}
/**
* 'copy' function
*
* Makes a shallow copy of a JavaScript object, array, Map, or Set.
* If passed a JavaScript primitive value (string, number, boolean, or null),
* it returns the value.
*
* // {Object|Array|string|number|boolean|null} object - The object to copy
* // {boolean = false} errors - Show errors?
* // {Object|Array|string|number|boolean|null} - The copied object
*/
export function copy(object, errors = false) {
if (typeof object !== 'object' || object === null) {
return object;
}
if (isMap(object)) {
return new Map(object);
}
if (isSet(object)) {
return new Set(object);
}
if (isArray(object)) {
return [...object];
}
if (isObject(object)) {
return { ...object };
}
if (errors) {
console.error('copy error: Object to copy must be a JavaScript object or value.');
}
return object;
}
/**
* 'forEach' function
*
* Iterates over all items in the first level of an object or array
* and calls an iterator funciton on each item.
*
* The iterator function is called with four values:
* 1. The current item's value
* 2. The current item's key
* 3. The parent object, which contains the current item
* 4. The root object
*
* Setting the optional third parameter to 'top-down' or 'bottom-up' will cause
* it to also recursively iterate over items in sub-objects or sub-arrays in the
* specified direction.
*
* // {Object|Array} object - The object or array to iterate over
* // {function} fn - the iterator funciton to call on each item
* // {boolean = false} errors - Show errors?
* // {void}
*/
export function forEach(object, fn, recurse = false, rootObject = object, errors = false) {
if (isEmpty(object)) {
return;
}
if ((isObject(object) || isArray(object)) && typeof fn === 'function') {
for (const key of Object.keys(object)) {
const value = object[key];
if (recurse === 'bottom-up' && (isObject(value) || isArray(value))) {
forEach(value, fn, recurse, rootObject);
}
fn(value, key, object, rootObject);
if (recurse === 'top-down' && (isObject(value) || isArray(value))) {
forEach(value, fn, recurse, rootObject);
}
}
}
if (errors) {
if (typeof fn !== 'function') {
console.error('forEach error: Iterator must be a function.');
console.error('function', fn);
}
if (!isObject(object) && !isArray(object)) {
console.error('forEach error: Input object must be an object or array.');
console.error('object', object);
}
}
}
/**
* 'forEachCopy' function
*
* Iterates over all items in the first level of an object or array
* and calls an iterator function on each item. Returns a new object or array
* with the same keys or indexes as the original, and values set to the results
* of the iterator function.
*
* Does NOT recursively iterate over items in sub-objects or sub-arrays.
*
* // {Object | Array} object - The object or array to iterate over
* // {function} fn - The iterator funciton to call on each item
* // {boolean = false} errors - Show errors?
* // {Object | Array} - The resulting object or array
*/
export function forEachCopy(object, fn, errors = false) {
if (!hasValue(object)) {
return;
}
if ((isObject(object) || isArray(object)) && typeof object !== 'function') {
const newObject = isArray(object) ? [] : {};
for (const key of Object.keys(object)) {
newObject[key] = fn(object[key], key, object);
}
return newObject;
}
if (errors) {
if (typeof fn !== 'function') {
console.error('forEachCopy error: Iterator must be a function.');
console.error('function', fn);
}
if (!isObject(object) && !isArray(object)) {
console.error('forEachCopy error: Input object must be an object or array.');
console.error('object', object);
}
}
}
/**
* 'hasOwn' utility function
*
* Checks whether an object or array has a particular property.
*
* // {any} object - the object to check
* // {string} property - the property to look for
* // {boolean} - true if object has property, false if not
*/
export function hasOwn(object, property) {
if (!object || !['number', 'string', 'symbol'].includes(typeof property) ||
(!isObject(object) && !isArray(object) && !isMap(object) && !isSet(object))) {
return false;
}
if (isMap(object) || isSet(object)) {
return object.has(property);
}
if (typeof property === 'number') {
if (isArray(object)) {
return object[property];
}
property = property + '';
}
return object.hasOwnProperty(property);
}
/**
* Types of possible expressions which the app is able to evaluate.
*/
export var ExpressionType;
(function (ExpressionType) {
ExpressionType[ExpressionType["EQUALS"] = 0] = "EQUALS";
ExpressionType[ExpressionType["NOT_EQUALS"] = 1] = "NOT_EQUALS";
ExpressionType[ExpressionType["NOT_AN_EXPRESSION"] = 2] = "NOT_AN_EXPRESSION";
})(ExpressionType || (ExpressionType = {}));
/**
* Detects the type of expression from the given candidate. `==` for equals,
* `!=` for not equals. If none of these are contained in the candidate, the candidate
* is not considered to be an expression at all and thus `NOT_AN_EXPRESSION` is returned.
* // {expressionCandidate} expressionCandidate - potential expression
*/
export function getExpressionType(expressionCandidate) {
if (expressionCandidate.indexOf('==') !== -1) {
return ExpressionType.EQUALS;
}
if (expressionCandidate.toString().indexOf('!=') !== -1) {
return ExpressionType.NOT_EQUALS;
}
return ExpressionType.NOT_AN_EXPRESSION;
}
export function isEqual(expressionType) {
return expressionType === ExpressionType.EQUALS;
}
export function isNotEqual(expressionType) {
return expressionType === ExpressionType.NOT_EQUALS;
}
export function isNotExpression(expressionType) {
return expressionType === ExpressionType.NOT_AN_EXPRESSION;
}
/**
* Splits the expression key by the expressionType on a pair of values
* before and after the equals or nor equals sign.
* // {expressionType} enum of an expression type
* // {key} the given key from a for loop iver all conditions
*/
export function getKeyAndValueByExpressionType(expressionType, key) {
if (isEqual(expressionType)) {
return key.split('==', 2);
}
if (isNotEqual(expressionType)) {
return key.split('!=', 2);
}
return null;
}
export function cleanValueOfQuotes(keyAndValue) {
if (keyAndValue.charAt(0) === '\'' && keyAndValue.charAt(keyAndValue.length - 1) === '\'') {
return keyAndValue.replace('\'', '').replace('\'', '');
}
return keyAndValue;
}
/**
* 'mergeFilteredObject' utility function
*
* Shallowly merges two objects, setting key and values from source object
* in target object, excluding specified keys.
*
* Optionally, it can also use functions to transform the key names and/or
* the values of the merging object.
*
* // {PlainObject} targetObject - Target object to add keys and values to
* // {PlainObject} sourceObject - Source object to copy keys and values from
* // {string[]} excludeKeys - Array of keys to exclude
* // {(string: string) => string = (k) => k} keyFn - Function to apply to keys
* // {(any: any) => any = (v) => v} valueFn - Function to apply to values
* // {PlainObject} - Returns targetObject
*/
export function mergeFilteredObject(targetObject, sourceObject, excludeKeys = [], keyFn = (key) => key, valFn = (val) => val) {
if (!isObject(sourceObject)) {
return targetObject;
}
if (!isObject(targetObject)) {
targetObject = {};
}
for (const key of Object.keys(sourceObject)) {
if (!inArray(key, excludeKeys) && isDefined(sourceObject[key])) {
targetObject[keyFn(key)] = valFn(sourceObject[key]);
}
}
return targetObject;
}
/**
* 'uniqueItems' function
*
* Accepts any number of string value inputs,
* and returns an array of all input vaues, excluding duplicates.
*
* // {...string} ...items -
* // {string[]} -
*/
export function uniqueItems(...items) {
const returnItems = [];
for (const item of items) {
if (!returnItems.includes(item)) {
returnItems.push(item);
}
}
return returnItems;
}
/**
* 'commonItems' function
*
* Accepts any number of strings or arrays of string values,
* and returns a single array containing only values present in all inputs.
*
* // {...string|string[]} ...arrays -
* // {string[]} -
*/
export function commonItems(...arrays) {
let returnItems = null;
for (let array of arrays) {
if (isString(array)) {
array = [array];
}
returnItems = returnItems === null ? [...array] :
returnItems.filter(item => array.includes(item));
if (!returnItems.length) {
return [];
}
}
return returnItems;
}
/**
* 'fixTitle' function
*
*
* // {string} input -
* // {string} -
*/
export function fixTitle(name) {
return name && toTitleCase(name.replace(/([a-z])([A-Z])/g, '$1 $2').replace(/_/g, ' '));
}
/**
* 'toTitleCase' function
*
* Intelligently converts an input string to Title Case.
*
* Accepts an optional second parameter with a list of additional
* words and abbreviations to force into a particular case.
*
* This function is built on prior work by John Gruber and David Gouch:
* http://daringfireball.net/2008/08/title_case_update
* https://github.com/gouch/to-title-case
*
* // {string} input -
* // {string|string[]} forceWords? -
* // {string} -
*/
export function toTitleCase(input, forceWords) {
if (!isString(input)) {
return input;
}
let forceArray = ['a', 'an', 'and', 'as', 'at', 'but', 'by', 'en',
'for', 'if', 'in', 'nor', 'of', 'on', 'or', 'per', 'the', 'to', 'v', 'v.',
'vs', 'vs.', 'via'];
if (isString(forceWords)) {
forceWords = forceWords.split('|');
}
if (isArray(forceWords)) {
forceArray = forceArray.concat(forceWords);
}
const forceArrayLower = forceArray.map(w => w.toLowerCase());
const noInitialCase = input === input.toUpperCase() || input === input.toLowerCase();
let prevLastChar = '';
input = input.trim();
return input.replace(/[A-Za-z0-9\u00C0-\u00FF]+[^\s-]*/g, (word, idx) => {
if (!noInitialCase && word.slice(1).search(/[A-Z]|\../) !== -1) {
return word;
}
else {
let newWord;
const forceWord = forceArray[forceArrayLower.indexOf(word.toLowerCase())];
if (!forceWord) {
if (noInitialCase) {
if (word.slice(1).search(/\../) !== -1) {
newWord = word.toLowerCase();
}
else {
newWord = word[0].toUpperCase() + word.slice(1).toLowerCase();
}
}
else {
newWord = word[0].toUpperCase() + word.slice(1);
}
}
else if (forceWord === forceWord.toLowerCase() && (idx === 0 || idx + word.length === input.length ||
prevLastChar === ':' || input[idx - 1].search(/[^\s-]/) !== -1 ||
(input[idx - 1] !== '-' && input[idx + word.length] === '-'))) {
newWord = forceWord[0].toUpperCase() + forceWord.slice(1);
}
else {
newWord = forceWord;
}
prevLastChar = word.slice(-1);
return newWord;
}
});
}
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{hasValue, inArray, isArray, isDefined, isEmpty, isMap, isObject, isSet, isString, PlainObject} from './validator.functions';\n\n/**\n * Utility function library:\n *\n * addClasses, copy, forEach, forEachCopy, hasOwn, mergeFilteredObject,\n * uniqueItems, commonItems, fixTitle, toTitleCase\n*/\n\n/**\n * 'addClasses' function\n *\n * Merges two space-delimited lists of CSS classes and removes duplicates.\n *\n * // {string | string[] | Set<string>} oldClasses\n * // {string | string[] | Set<string>} newClasses\n * // {string | string[] | Set<string>} - Combined classes\n */\nexport function addClasses(\n  oldClasses: string | string[] | Set<string>,\n  newClasses: string | string[] | Set<string>\n): string | string[] | Set<string> {\n  const badType = i => !isSet(i) && !isArray(i) && !isString(i);\n  if (badType(newClasses)) { return oldClasses; }\n  if (badType(oldClasses)) { oldClasses = ''; }\n  const toSet = i => isSet(i) ? i : isArray(i) ? new Set(i) : new Set(i.split(' '));\n  const combinedSet: Set<any> = toSet(oldClasses);\n  const newSet: Set<any> = toSet(newClasses);\n  newSet.forEach(c => combinedSet.add(c));\n  if (isSet(oldClasses)) { return combinedSet; }\n  if (isArray(oldClasses)) { return Array.from(combinedSet); }\n  return Array.from(combinedSet).join(' ');\n}\n\n/**\n * 'copy' function\n *\n * Makes a shallow copy of a JavaScript object, array, Map, or Set.\n * If passed a JavaScript primitive value (string, number, boolean, or null),\n * it returns the value.\n *\n * // {Object|Array|string|number|boolean|null} object - The object to copy\n * // {boolean = false} errors - Show errors?\n * // {Object|Array|string|number|boolean|null} - The copied object\n */\nexport function copy(object: any, errors = false): any {\n  if (typeof object !== 'object' || object === null) { return object; }\n  if (isMap(object))    { return new Map(object); }\n  if (isSet(object))    { return new Set(object); }\n  if (isArray(object))  { return [ ...object ];   }\n  if (isObject(object)) { return { ...object };   }\n  if (errors) {\n    console.error('copy error: Object to copy must be a JavaScript object or value.');\n  }\n  return object;\n}\n\n/**\n * 'forEach' function\n *\n * Iterates over all items in the first level of an object or array\n * and calls an iterator funciton on each item.\n *\n * The iterator function is called with four values:\n * 1. The current item's value\n * 2. The current item's key\n * 3. The parent object, which contains the current item\n * 4. The root object\n *\n * Setting the optional third parameter to 'top-down' or 'bottom-up' will cause\n * it to also recursively iterate over items in sub-objects or sub-arrays in the\n * specified direction.\n *\n * // {Object|Array} object - The object or array to iterate over\n * // {function} fn - the iterator funciton to call on each item\n * // {boolean = false} errors - Show errors?\n * // {void}\n */\nexport function forEach(\n  object: any, fn: (v: any, k?: string | number, c?: any, rc?: any) => any,\n  recurse: boolean | string = false, rootObject: any = object, errors = false\n): void {\n  if (isEmpty(object)) { return; }\n  if ((isObject(object) || isArray(object)) && typeof fn === 'function') {\n    for (const key of Object.keys(object)) {\n      const value = object[key];\n      if (recurse === 'bottom-up' && (isObject(value) || isArray(value))) {\n        forEach(value, fn, recurse, rootObject);\n      }\n      fn(value, key, object, rootObject);\n      if (recurse === 'top-down' && (isObject(value) || isArray(value))) {\n        forEach(value, fn, recurse, rootObject);\n      }\n    }\n  }\n  if (errors) {\n    if (typeof fn !== 'function') {\n      console.error('forEach error: Iterator must be a function.');\n      console.error('function', fn);\n    }\n    if (!isObject(object) && !isArray(object)) {\n      console.error('forEach error: Input object must be an object or array.');\n      console.error('object', object);\n    }\n  }\n}\n\n/**\n * 'forEachCopy' function\n *\n * Iterates over all items in the first level of an object or array\n * and calls an iterator function on each item. Returns a new object or array\n * with the same keys or indexes as the original, and values set to the results\n * of the iterator function.\n *\n * Does NOT recursively iterate over items in sub-objects or sub-arrays.\n *\n * // {Object | Array} object - The object or array to iterate over\n * // {function} fn - The iterator funciton to call on each item\n * // {boolean = false} errors - Show errors?\n * // {Object | Array} - The resulting object or array\n */\nexport function forEachCopy(\n  object: any, fn: (v: any, k?: string | number, o?: any, p?: string) => any,\n  errors = false\n): any {\n  if (!hasValue(object)) { return; }\n  if ((isObject(object) || isArray(object)) && typeof object !== 'function') {\n    const newObject: any = isArray(object) ? [] : {};\n    for (const key of Object.keys(object)) {\n      newObject[key] = fn(object[key], key, object);\n    }\n    return newObject;\n  }\n  if (errors) {\n    if (typeof fn !== 'function') {\n      console.error('forEachCopy error: Iterator must be a function.');\n      console.error('function', fn);\n    }\n    if (!isObject(object) && !isArray(object)) {\n      console.error('forEachCopy error: Input object must be an object or array.');\n      console.error('object', object);\n    }\n  }\n}\n\n/**\n * 'hasOwn' utility function\n *\n * Checks whether an object or array has a particular property.\n *\n * // {any} object - the object to check\n * // {string} property - the property to look for\n * // {boolean} - true if object has property, false if not\n */\nexport function hasOwn(object: any, property: string): boolean {\n  if (!object || !['number', 'string', 'symbol'].includes(typeof property) ||\n    (!isObject(object) && !isArray(object) && !isMap(object) && !isSet(object))\n  ) { return false; }\n  if (isMap(object) || isSet(object)) { return object.has(property); }\n  if (typeof property === 'number') {\n    if (isArray(object)) { return object[<number>property]; }\n    property = property + '';\n  }\n  return object.hasOwnProperty(property);\n}\n\n/**\n * Types of possible expressions which the app is able to evaluate.\n */\nexport enum ExpressionType {\n  EQUALS,\n  NOT_EQUALS,\n  NOT_AN_EXPRESSION\n}\n\n/**\n * Detects the type of expression from the given candidate. `==` for equals,\n * `!=` for not equals. If none of these are contained in the candidate, the candidate\n * is not considered to be an expression at all and thus `NOT_AN_EXPRESSION` is returned.\n * // {expressionCandidate} expressionCandidate - potential expression\n */\nexport function getExpressionType(expressionCandidate: string): ExpressionType {\n  if (expressionCandidate.indexOf('==') !== -1) {\n    return ExpressionType.EQUALS;\n  }\n\n  if (expressionCandidate.toString().indexOf('!=') !== -1) {\n    return ExpressionType.NOT_EQUALS;\n  }\n\n  return ExpressionType.NOT_AN_EXPRESSION;\n}\n\nexport function isEqual(expressionType) {\n  return expressionType as ExpressionType === ExpressionType.EQUALS;\n}\n\nexport function isNotEqual(expressionType) {\n  return expressionType as ExpressionType === ExpressionType.NOT_EQUALS;\n}\n\nexport function isNotExpression(expressionType) {\n  return expressionType as ExpressionType === ExpressionType.NOT_AN_EXPRESSION;\n}\n\n/**\n * Splits the expression key by the expressionType on a pair of values\n * before and after the equals or nor equals sign.\n * // {expressionType} enum of an expression type\n * // {key} the given key from a for loop iver all conditions\n */\nexport function getKeyAndValueByExpressionType(expressionType: ExpressionType, key: string) {\n  if (isEqual(expressionType)) {\n    return key.split('==', 2);\n  }\n\n  if (isNotEqual(expressionType)) {\n    return key.split('!=', 2);\n  }\n\n  return null;\n}\n\nexport function cleanValueOfQuotes(keyAndValue): String {\n  if (keyAndValue.charAt(0) === '\\'' && keyAndValue.charAt(keyAndValue.length - 1) === '\\'') {\n    return keyAndValue.replace('\\'', '').replace('\\'', '');\n  }\n  return keyAndValue;\n}\n\n/**\n * 'mergeFilteredObject' utility function\n *\n * Shallowly merges two objects, setting key and values from source object\n * in target object, excluding specified keys.\n *\n * Optionally, it can also use functions to transform the key names and/or\n * the values of the merging object.\n *\n * // {PlainObject} targetObject - Target object to add keys and values to\n * // {PlainObject} sourceObject - Source object to copy keys and values from\n * // {string[]} excludeKeys - Array of keys to exclude\n * // {(string: string) => string = (k) => k} keyFn - Function to apply to keys\n * // {(any: any) => any = (v) => v} valueFn - Function to apply to values\n * // {PlainObject} - Returns targetObject\n */\nexport function mergeFilteredObject(\n  targetObject: PlainObject,\n  sourceObject: PlainObject,\n  excludeKeys = <string[]>[],\n  keyFn = (key: string): string => key,\n  valFn = (val: any): any => val\n): PlainObject {\n  if (!isObject(sourceObject)) { return targetObject; }\n  if (!isObject(targetObject)) { targetObject = {}; }\n  for (const key of Object.keys(sourceObject)) {\n    if (!inArray(key, excludeKeys) && isDefined(sourceObject[key])) {\n      targetObject[keyFn(key)] = valFn(sourceObject[key]);\n    }\n  }\n  return targetObject;\n}\n\n/**\n * 'uniqueItems' function\n *\n * Accepts any number of string value inputs,\n * and returns an array of all input vaues, excluding duplicates.\n *\n * // {...string} ...items -\n * // {string[]} -\n */\nexport function uniqueItems(...items): string[] {\n  const returnItems = [];\n  for (const item of items) {\n    if (!returnItems.includes(item)) { returnItems.push(item); }\n  }\n  return returnItems;\n}\n\n/**\n * 'commonItems' function\n *\n * Accepts any number of strings or arrays of string values,\n * and returns a single array containing only values present in all inputs.\n *\n * // {...string|string[]} ...arrays -\n * // {string[]} -\n */\nexport function commonItems(...arrays): string[] {\n  let returnItems = null;\n  for (let array of arrays) {\n    if (isString(array)) { array = [array]; }\n    returnItems = returnItems === null ? [ ...array ] :\n      returnItems.filter(item => array.includes(item));\n    if (!returnItems.length) { return []; }\n  }\n  return returnItems;\n}\n\n/**\n * 'fixTitle' function\n *\n *\n * // {string} input -\n * // {string} -\n */\nexport function fixTitle(name: string): string {\n  return name && toTitleCase(name.replace(/([a-z])([A-Z])/g, '$1 $2').replace(/_/g, ' '));\n}\n\n/**\n * 'toTitleCase' function\n *\n * Intelligently converts an input string to Title Case.\n *\n * Accepts an optional second parameter with a list of additional\n * words and abbreviations to force into a particular case.\n *\n * This function is built on prior work by John Gruber and David Gouch:\n * http://daringfireball.net/2008/08/title_case_update\n * https://github.com/gouch/to-title-case\n *\n * // {string} input -\n * // {string|string[]} forceWords? -\n * // {string} -\n */\nexport function toTitleCase(input: string, forceWords?: string|string[]): string {\n  if (!isString(input)) { return input; }\n  let forceArray: string[] = ['a', 'an', 'and', 'as', 'at', 'but', 'by', 'en',\n   'for', 'if', 'in', 'nor', 'of', 'on', 'or', 'per', 'the', 'to', 'v', 'v.',\n   'vs', 'vs.', 'via'];\n  if (isString(forceWords)) { forceWords = (<string>forceWords).split('|'); }\n  if (isArray(forceWords)) { forceArray = forceArray.concat(forceWords); }\n  const forceArrayLower: string[] = forceArray.map(w => w.toLowerCase());\n  const noInitialCase: boolean =\n    input === input.toUpperCase() || input === input.toLowerCase();\n  let prevLastChar = '';\n  input = input.trim();\n  return input.replace(/[A-Za-z0-9\\u00C0-\\u00FF]+[^\\s-]*/g, (word, idx) => {\n    if (!noInitialCase && word.slice(1).search(/[A-Z]|\\../) !== -1) {\n      return word;\n    } else {\n      let newWord: string;\n      const forceWord: string =\n        forceArray[forceArrayLower.indexOf(word.toLowerCase())];\n      if (!forceWord) {\n        if (noInitialCase) {\n          if (word.slice(1).search(/\\../) !== -1) {\n            newWord = word.toLowerCase();\n          } else {\n            newWord = word[0].toUpperCase() + word.slice(1).toLowerCase();\n          }\n        } else {\n          newWord = word[0].toUpperCase() + word.slice(1);\n        }\n      } else if (\n        forceWord === forceWord.toLowerCase() && (\n          idx === 0 || idx + word.length === input.length ||\n          prevLastChar === ':' || input[idx - 1].search(/[^\\s-]/) !== -1 ||\n          (input[idx - 1] !== '-' && input[idx + word.length] === '-')\n        )\n      ) {\n        newWord = forceWord[0].toUpperCase() + forceWord.slice(1);\n      } else {\n        newWord = forceWord;\n      }\n      prevLastChar = word.slice(-1);\n      return newWord;\n    }\n  });\n}\n"]}