source: trip-planner-front/node_modules/@angular/common/esm2015/src/pipes/number_pipe.js@ 6a3a178

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1/**
2 * @license
3 * Copyright Google LLC All Rights Reserved.
4 *
5 * Use of this source code is governed by an MIT-style license that can be
6 * found in the LICENSE file at https://angular.io/license
7 */
8import { DEFAULT_CURRENCY_CODE, Inject, LOCALE_ID, Pipe } from '@angular/core';
9import { formatCurrency, formatNumber, formatPercent } from '../i18n/format_number';
10import { getCurrencySymbol } from '../i18n/locale_data_api';
11import { invalidPipeArgumentError } from './invalid_pipe_argument_error';
12/**
13 * @ngModule CommonModule
14 * @description
15 *
16 * Formats a value according to digit options and locale rules.
17 * Locale determines group sizing and separator,
18 * decimal point character, and other locale-specific configurations.
19 *
20 * @see `formatNumber()`
21 *
22 * @usageNotes
23 *
24 * ### digitsInfo
25 *
26 * The value's decimal representation is specified by the `digitsInfo`
27 * parameter, written in the following format:<br>
28 *
29 * ```
30 * {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}
31 * ```
32 *
33 * - `minIntegerDigits`:
34 * The minimum number of integer digits before the decimal point.
35 * Default is 1.
36 *
37 * - `minFractionDigits`:
38 * The minimum number of digits after the decimal point.
39 * Default is 0.
40 *
41 * - `maxFractionDigits`:
42 * The maximum number of digits after the decimal point.
43 * Default is 3.
44 *
45 * If the formatted value is truncated it will be rounded using the "to-nearest" method:
46 *
47 * ```
48 * {{3.6 | number: '1.0-0'}}
49 * <!--will output '4'-->
50 *
51 * {{-3.6 | number:'1.0-0'}}
52 * <!--will output '-4'-->
53 * ```
54 *
55 * ### locale
56 *
57 * `locale` will format a value according to locale rules.
58 * Locale determines group sizing and separator,
59 * decimal point character, and other locale-specific configurations.
60 *
61 * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.
62 *
63 * See [Setting your app locale](guide/i18n-common-locale-id).
64 *
65 * ### Example
66 *
67 * The following code shows how the pipe transforms values
68 * according to various format specifications,
69 * where the caller's default locale is `en-US`.
70 *
71 * <code-example path="common/pipes/ts/number_pipe.ts" region='NumberPipe'></code-example>
72 *
73 * @publicApi
74 */
75export class DecimalPipe {
76 constructor(_locale) {
77 this._locale = _locale;
78 }
79 /**
80 * @param value The value to be formatted.
81 * @param digitsInfo Sets digit and decimal representation.
82 * [See more](#digitsinfo).
83 * @param locale Specifies what locale format rules to use.
84 * [See more](#locale).
85 */
86 transform(value, digitsInfo, locale) {
87 if (!isValue(value))
88 return null;
89 locale = locale || this._locale;
90 try {
91 const num = strToNumber(value);
92 return formatNumber(num, locale, digitsInfo);
93 }
94 catch (error) {
95 throw invalidPipeArgumentError(DecimalPipe, error.message);
96 }
97 }
98}
99DecimalPipe.decorators = [
100 { type: Pipe, args: [{ name: 'number' },] }
101];
102DecimalPipe.ctorParameters = () => [
103 { type: String, decorators: [{ type: Inject, args: [LOCALE_ID,] }] }
104];
105/**
106 * @ngModule CommonModule
107 * @description
108 *
109 * Transforms a number to a percentage
110 * string, formatted according to locale rules that determine group sizing and
111 * separator, decimal-point character, and other locale-specific
112 * configurations.
113 *
114 * @see `formatPercent()`
115 *
116 * @usageNotes
117 * The following code shows how the pipe transforms numbers
118 * into text strings, according to various format specifications,
119 * where the caller's default locale is `en-US`.
120 *
121 * <code-example path="common/pipes/ts/percent_pipe.ts" region='PercentPipe'></code-example>
122 *
123 * @publicApi
124 */
125export class PercentPipe {
126 constructor(_locale) {
127 this._locale = _locale;
128 }
129 /**
130 *
131 * @param value The number to be formatted as a percentage.
132 * @param digitsInfo Decimal representation options, specified by a string
133 * in the following format:<br>
134 * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.
135 * - `minIntegerDigits`: The minimum number of integer digits before the decimal point.
136 * Default is `1`.
137 * - `minFractionDigits`: The minimum number of digits after the decimal point.
138 * Default is `0`.
139 * - `maxFractionDigits`: The maximum number of digits after the decimal point.
140 * Default is `0`.
141 * @param locale A locale code for the locale format rules to use.
142 * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.
143 * See [Setting your app locale](guide/i18n-common-locale-id).
144 */
145 transform(value, digitsInfo, locale) {
146 if (!isValue(value))
147 return null;
148 locale = locale || this._locale;
149 try {
150 const num = strToNumber(value);
151 return formatPercent(num, locale, digitsInfo);
152 }
153 catch (error) {
154 throw invalidPipeArgumentError(PercentPipe, error.message);
155 }
156 }
157}
158PercentPipe.decorators = [
159 { type: Pipe, args: [{ name: 'percent' },] }
160];
161PercentPipe.ctorParameters = () => [
162 { type: String, decorators: [{ type: Inject, args: [LOCALE_ID,] }] }
163];
164/**
165 * @ngModule CommonModule
166 * @description
167 *
168 * Transforms a number to a currency string, formatted according to locale rules
169 * that determine group sizing and separator, decimal-point character,
170 * and other locale-specific configurations.
171 *
172 * {@a currency-code-deprecation}
173 * <div class="alert is-helpful">
174 *
175 * **Deprecation notice:**
176 *
177 * The default currency code is currently always `USD` but this is deprecated from v9.
178 *
179 * **In v11 the default currency code will be taken from the current locale identified by
180 * the `LOCALE_ID` token. See the [i18n guide](guide/i18n-common-locale-id) for
181 * more information.**
182 *
183 * If you need the previous behavior then set it by creating a `DEFAULT_CURRENCY_CODE` provider in
184 * your application `NgModule`:
185 *
186 * ```ts
187 * {provide: DEFAULT_CURRENCY_CODE, useValue: 'USD'}
188 * ```
189 *
190 * </div>
191 *
192 * @see `getCurrencySymbol()`
193 * @see `formatCurrency()`
194 *
195 * @usageNotes
196 * The following code shows how the pipe transforms numbers
197 * into text strings, according to various format specifications,
198 * where the caller's default locale is `en-US`.
199 *
200 * <code-example path="common/pipes/ts/currency_pipe.ts" region='CurrencyPipe'></code-example>
201 *
202 * @publicApi
203 */
204export class CurrencyPipe {
205 constructor(_locale, _defaultCurrencyCode = 'USD') {
206 this._locale = _locale;
207 this._defaultCurrencyCode = _defaultCurrencyCode;
208 }
209 /**
210 *
211 * @param value The number to be formatted as currency.
212 * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code,
213 * such as `USD` for the US dollar and `EUR` for the euro. The default currency code can be
214 * configured using the `DEFAULT_CURRENCY_CODE` injection token.
215 * @param display The format for the currency indicator. One of the following:
216 * - `code`: Show the code (such as `USD`).
217 * - `symbol`(default): Show the symbol (such as `$`).
218 * - `symbol-narrow`: Use the narrow symbol for locales that have two symbols for their
219 * currency.
220 * For example, the Canadian dollar CAD has the symbol `CA$` and the symbol-narrow `$`. If the
221 * locale has no narrow symbol, uses the standard symbol for the locale.
222 * - String: Use the given string value instead of a code or a symbol.
223 * For example, an empty string will suppress the currency & symbol.
224 * - Boolean (marked deprecated in v5): `true` for symbol and false for `code`.
225 *
226 * @param digitsInfo Decimal representation options, specified by a string
227 * in the following format:<br>
228 * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.
229 * - `minIntegerDigits`: The minimum number of integer digits before the decimal point.
230 * Default is `1`.
231 * - `minFractionDigits`: The minimum number of digits after the decimal point.
232 * Default is `2`.
233 * - `maxFractionDigits`: The maximum number of digits after the decimal point.
234 * Default is `2`.
235 * If not provided, the number will be formatted with the proper amount of digits,
236 * depending on what the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) specifies.
237 * For example, the Canadian dollar has 2 digits, whereas the Chilean peso has none.
238 * @param locale A locale code for the locale format rules to use.
239 * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.
240 * See [Setting your app locale](guide/i18n-common-locale-id).
241 */
242 transform(value, currencyCode = this._defaultCurrencyCode, display = 'symbol', digitsInfo, locale) {
243 if (!isValue(value))
244 return null;
245 locale = locale || this._locale;
246 if (typeof display === 'boolean') {
247 if ((typeof ngDevMode === 'undefined' || ngDevMode) && console && console.warn) {
248 console.warn(`Warning: the currency pipe has been changed in Angular v5. The symbolDisplay option (third parameter) is now a string instead of a boolean. The accepted values are "code", "symbol" or "symbol-narrow".`);
249 }
250 display = display ? 'symbol' : 'code';
251 }
252 let currency = currencyCode || this._defaultCurrencyCode;
253 if (display !== 'code') {
254 if (display === 'symbol' || display === 'symbol-narrow') {
255 currency = getCurrencySymbol(currency, display === 'symbol' ? 'wide' : 'narrow', locale);
256 }
257 else {
258 currency = display;
259 }
260 }
261 try {
262 const num = strToNumber(value);
263 return formatCurrency(num, locale, currency, currencyCode, digitsInfo);
264 }
265 catch (error) {
266 throw invalidPipeArgumentError(CurrencyPipe, error.message);
267 }
268 }
269}
270CurrencyPipe.decorators = [
271 { type: Pipe, args: [{ name: 'currency' },] }
272];
273CurrencyPipe.ctorParameters = () => [
274 { type: String, decorators: [{ type: Inject, args: [LOCALE_ID,] }] },
275 { type: String, decorators: [{ type: Inject, args: [DEFAULT_CURRENCY_CODE,] }] }
276];
277function isValue(value) {
278 return !(value == null || value === '' || value !== value);
279}
280/**
281 * Transforms a string into a number (if needed).
282 */
283function strToNumber(value) {
284 // Convert strings to numbers
285 if (typeof value === 'string' && !isNaN(Number(value) - parseFloat(value))) {
286 return Number(value);
287 }
288 if (typeof value !== 'number') {
289 throw new Error(`${value} is not a number`);
290 }
291 return value;
292}
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`minIntegerDigits`:\n * The minimum number of integer digits before the decimal point.\n * Default is 1.\n *\n * - `minFractionDigits`:\n * The minimum number of digits after the decimal point.\n * Default is 0.\n *\n *  - `maxFractionDigits`:\n * The maximum number of digits after the decimal point.\n * Default is 3.\n *\n * If the formatted value is truncated it will be rounded using the \"to-nearest\" method:\n *\n * ```\n * {{3.6 | number: '1.0-0'}}\n * <!--will output '4'-->\n *\n * {{-3.6 | number:'1.0-0'}}\n * <!--will output '-4'-->\n * ```\n *\n * ### locale\n *\n * `locale` will format a value according to locale rules.\n * Locale determines group sizing and separator,\n * decimal point character, and other locale-specific configurations.\n *\n * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n *\n * See [Setting your app locale](guide/i18n-common-locale-id).\n *\n * ### Example\n *\n * The following code shows how the pipe transforms values\n * according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/number_pipe.ts\" region='NumberPipe'></code-example>\n *\n * @publicApi\n */\n@Pipe({name: 'number'})\nexport class DecimalPipe implements PipeTransform {\n  constructor(@Inject(LOCALE_ID) private _locale: string) {}\n\n  transform(value: number|string, digitsInfo?: string, locale?: string): string|null;\n  transform(value: null|undefined, digitsInfo?: string, locale?: string): null;\n  transform(value: number|string|null|undefined, digitsInfo?: string, locale?: string): string|null;\n  /**\n   * @param value The value to be formatted.\n   * @param digitsInfo Sets digit and decimal representation.\n   * [See more](#digitsinfo).\n   * @param locale Specifies what locale format rules to use.\n   * [See more](#locale).\n   */\n  transform(value: number|string|null|undefined, digitsInfo?: string, locale?: string): string\n      |null {\n    if (!isValue(value)) return null;\n\n    locale = locale || this._locale;\n\n    try {\n      const num = strToNumber(value);\n      return formatNumber(num, locale, digitsInfo);\n    } catch (error) {\n      throw invalidPipeArgumentError(DecimalPipe, error.message);\n    }\n  }\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a percentage\n * string, formatted according to locale rules that determine group sizing and\n * separator, decimal-point character, and other locale-specific\n * configurations.\n *\n * @see `formatPercent()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/percent_pipe.ts\" region='PercentPipe'></code-example>\n *\n * @publicApi\n */\n@Pipe({name: 'percent'})\nexport class PercentPipe implements PipeTransform {\n  constructor(@Inject(LOCALE_ID) private _locale: string) {}\n\n  transform(value: number|string, digitsInfo?: string, locale?: string): string|null;\n  transform(value: null|undefined, digitsInfo?: string, locale?: string): null;\n  transform(value: number|string|null|undefined, digitsInfo?: string, locale?: string): string|null;\n  /**\n   *\n   * @param value The number to be formatted as a percentage.\n   * @param digitsInfo Decimal representation options, specified by a string\n   * in the following format:<br>\n   * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.\n   *   - `minIntegerDigits`: The minimum number of integer digits before the decimal point.\n   * Default is `1`.\n   *   - `minFractionDigits`: The minimum number of digits after the decimal point.\n   * Default is `0`.\n   *   - `maxFractionDigits`: The maximum number of digits after the decimal point.\n   * Default is `0`.\n   * @param locale A locale code for the locale format rules to use.\n   * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n   * See [Setting your app locale](guide/i18n-common-locale-id).\n   */\n  transform(value: number|string|null|undefined, digitsInfo?: string, locale?: string): string\n      |null {\n    if (!isValue(value)) return null;\n    locale = locale || this._locale;\n    try {\n      const num = strToNumber(value);\n      return formatPercent(num, locale, digitsInfo);\n    } catch (error) {\n      throw invalidPipeArgumentError(PercentPipe, error.message);\n    }\n  }\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a currency string, formatted according to locale rules\n * that determine group sizing and separator, decimal-point character,\n * and other locale-specific configurations.\n *\n * {@a currency-code-deprecation}\n * <div class=\"alert is-helpful\">\n *\n * **Deprecation notice:**\n *\n * The default currency code is currently always `USD` but this is deprecated from v9.\n *\n * **In v11 the default currency code will be taken from the current locale identified by\n * the `LOCALE_ID` token. See the [i18n guide](guide/i18n-common-locale-id) for\n * more information.**\n *\n * If you need the previous behavior then set it by creating a `DEFAULT_CURRENCY_CODE` provider in\n * your application `NgModule`:\n *\n * ```ts\n * {provide: DEFAULT_CURRENCY_CODE, useValue: 'USD'}\n * ```\n *\n * </div>\n *\n * @see `getCurrencySymbol()`\n * @see `formatCurrency()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/currency_pipe.ts\" region='CurrencyPipe'></code-example>\n *\n * @publicApi\n */\n@Pipe({name: 'currency'})\nexport class CurrencyPipe implements PipeTransform {\n  constructor(\n      @Inject(LOCALE_ID) private _locale: string,\n      @Inject(DEFAULT_CURRENCY_CODE) private _defaultCurrencyCode: string = 'USD') {}\n\n  transform(\n      value: number|string, currencyCode?: string,\n      display?: 'code'|'symbol'|'symbol-narrow'|string|boolean, digitsInfo?: string,\n      locale?: string): string|null;\n  transform(\n      value: null|undefined, currencyCode?: string,\n      display?: 'code'|'symbol'|'symbol-narrow'|string|boolean, digitsInfo?: string,\n      locale?: string): null;\n  transform(\n      value: number|string|null|undefined, currencyCode?: string,\n      display?: 'code'|'symbol'|'symbol-narrow'|string|boolean, digitsInfo?: string,\n      locale?: string): string|null;\n  /**\n   *\n   * @param value The number to be formatted as currency.\n   * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code,\n   * such as `USD` for the US dollar and `EUR` for the euro. The default currency code can be\n   * configured using the `DEFAULT_CURRENCY_CODE` injection token.\n   * @param display The format for the currency indicator. One of the following:\n   *   - `code`: Show the code (such as `USD`).\n   *   - `symbol`(default): Show the symbol (such as `$`).\n   *   - `symbol-narrow`: Use the narrow symbol for locales that have two symbols for their\n   * currency.\n   * For example, the Canadian dollar CAD has the symbol `CA$` and the symbol-narrow `$`. If the\n   * locale has no narrow symbol, uses the standard symbol for the locale.\n   *   - String: Use the given string value instead of a code or a symbol.\n   * For example, an empty string will suppress the currency & symbol.\n   *   - Boolean (marked deprecated in v5): `true` for symbol and false for `code`.\n   *\n   * @param digitsInfo Decimal representation options, specified by a string\n   * in the following format:<br>\n   * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.\n   *   - `minIntegerDigits`: The minimum number of integer digits before the decimal point.\n   * Default is `1`.\n   *   - `minFractionDigits`: The minimum number of digits after the decimal point.\n   * Default is `2`.\n   *   - `maxFractionDigits`: The maximum number of digits after the decimal point.\n   * Default is `2`.\n   * If not provided, the number will be formatted with the proper amount of digits,\n   * depending on what the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) specifies.\n   * For example, the Canadian dollar has 2 digits, whereas the Chilean peso has none.\n   * @param locale A locale code for the locale format rules to use.\n   * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n   * See [Setting your app locale](guide/i18n-common-locale-id).\n   */\n  transform(\n      value: number|string|null|undefined, currencyCode: string = this._defaultCurrencyCode,\n      display: 'code'|'symbol'|'symbol-narrow'|string|boolean = 'symbol', digitsInfo?: string,\n      locale?: string): string|null {\n    if (!isValue(value)) return null;\n\n    locale = locale || this._locale;\n\n    if (typeof display === 'boolean') {\n      if ((typeof ngDevMode === 'undefined' || ngDevMode) && <any>console && <any>console.warn) {\n        console.warn(\n            `Warning: the currency pipe has been changed in Angular v5. The symbolDisplay option (third parameter) is now a string instead of a boolean. The accepted values are \"code\", \"symbol\" or \"symbol-narrow\".`);\n      }\n      display = display ? 'symbol' : 'code';\n    }\n\n    let currency: string = currencyCode || this._defaultCurrencyCode;\n    if (display !== 'code') {\n      if (display === 'symbol' || display === 'symbol-narrow') {\n        currency = getCurrencySymbol(currency, display === 'symbol' ? 'wide' : 'narrow', locale);\n      } else {\n        currency = display;\n      }\n    }\n\n    try {\n      const num = strToNumber(value);\n      return formatCurrency(num, locale, currency, currencyCode, digitsInfo);\n    } catch (error) {\n      throw invalidPipeArgumentError(CurrencyPipe, error.message);\n    }\n  }\n}\n\nfunction isValue(value: number|string|null|undefined): value is number|string {\n  return !(value == null || value === '' || value !== value);\n}\n\n/**\n * Transforms a string into a number (if needed).\n */\nfunction strToNumber(value: number|string): number {\n  // Convert strings to numbers\n  if (typeof value === 'string' && !isNaN(Number(value) - parseFloat(value))) {\n    return Number(value);\n  }\n  if (typeof value !== 'number') {\n    throw new Error(`${value} is not a number`);\n  }\n  return value;\n}\n"]}
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