/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { getLocaleNumberFormat, getLocaleNumberSymbol, getNumberOfCurrencyDigits, NumberFormatStyle, NumberSymbol } from './locale_data_api'; export const NUMBER_FORMAT_REGEXP = /^(\d+)?\.((\d+)(-(\d+))?)?$/; const MAX_DIGITS = 22; const DECIMAL_SEP = '.'; const ZERO_CHAR = '0'; const PATTERN_SEP = ';'; const GROUP_SEP = ','; const DIGIT_CHAR = '#'; const CURRENCY_CHAR = 'ยค'; const PERCENT_CHAR = '%'; /** * Transforms a number to a locale string based on a style and a format. */ function formatNumberToLocaleString(value, pattern, locale, groupSymbol, decimalSymbol, digitsInfo, isPercent = false) { let formattedText = ''; let isZero = false; if (!isFinite(value)) { formattedText = getLocaleNumberSymbol(locale, NumberSymbol.Infinity); } else { let parsedNumber = parseNumber(value); if (isPercent) { parsedNumber = toPercent(parsedNumber); } let minInt = pattern.minInt; let minFraction = pattern.minFrac; let maxFraction = pattern.maxFrac; if (digitsInfo) { const parts = digitsInfo.match(NUMBER_FORMAT_REGEXP); if (parts === null) { throw new Error(`${digitsInfo} is not a valid digit info`); } const minIntPart = parts[1]; const minFractionPart = parts[3]; const maxFractionPart = parts[5]; if (minIntPart != null) { minInt = parseIntAutoRadix(minIntPart); } if (minFractionPart != null) { minFraction = parseIntAutoRadix(minFractionPart); } if (maxFractionPart != null) { maxFraction = parseIntAutoRadix(maxFractionPart); } else if (minFractionPart != null && minFraction > maxFraction) { maxFraction = minFraction; } } roundNumber(parsedNumber, minFraction, maxFraction); let digits = parsedNumber.digits; let integerLen = parsedNumber.integerLen; const exponent = parsedNumber.exponent; let decimals = []; isZero = digits.every(d => !d); // pad zeros for small numbers for (; integerLen < minInt; integerLen++) { digits.unshift(0); } // pad zeros for small numbers for (; integerLen < 0; integerLen++) { digits.unshift(0); } // extract decimals digits if (integerLen > 0) { decimals = digits.splice(integerLen, digits.length); } else { decimals = digits; digits = [0]; } // format the integer digits with grouping separators const groups = []; if (digits.length >= pattern.lgSize) { groups.unshift(digits.splice(-pattern.lgSize, digits.length).join('')); } while (digits.length > pattern.gSize) { groups.unshift(digits.splice(-pattern.gSize, digits.length).join('')); } if (digits.length) { groups.unshift(digits.join('')); } formattedText = groups.join(getLocaleNumberSymbol(locale, groupSymbol)); // append the decimal digits if (decimals.length) { formattedText += getLocaleNumberSymbol(locale, decimalSymbol) + decimals.join(''); } if (exponent) { formattedText += getLocaleNumberSymbol(locale, NumberSymbol.Exponential) + '+' + exponent; } } if (value < 0 && !isZero) { formattedText = pattern.negPre + formattedText + pattern.negSuf; } else { formattedText = pattern.posPre + formattedText + pattern.posSuf; } return formattedText; } /** * @ngModule CommonModule * @description * * Formats a number as currency using locale rules. * * @param value The number to format. * @param locale A locale code for the locale format rules to use. * @param currency A string containing the currency symbol or its name, * such as "$" or "Canadian Dollar". Used in output string, but does not affect the operation * of the function. * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) * currency code, such as `USD` for the US dollar and `EUR` for the euro. * Used to determine the number of digits in the decimal part. * @param digitsInfo Decimal representation options, specified by a string in the following format: * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details. * * @returns The formatted currency value. * * @see `formatNumber()` * @see `DecimalPipe` * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview) * * @publicApi */ export function formatCurrency(value, locale, currency, currencyCode, digitsInfo) { const format = getLocaleNumberFormat(locale, NumberFormatStyle.Currency); const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign)); pattern.minFrac = getNumberOfCurrencyDigits(currencyCode); pattern.maxFrac = pattern.minFrac; const res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.CurrencyGroup, NumberSymbol.CurrencyDecimal, digitsInfo); return res .replace(CURRENCY_CHAR, currency) // if we have 2 time the currency character, the second one is ignored .replace(CURRENCY_CHAR, '') // If there is a spacing between currency character and the value and // the currency character is suppressed by passing an empty string, the // spacing character would remain as part of the string. Then we // should remove it. .trim(); } /** * @ngModule CommonModule * @description * * Formats a number as a percentage according to locale rules. * * @param value The number to format. * @param locale A locale code for the locale format rules to use. * @param digitsInfo Decimal representation options, specified by a string in the following format: * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details. * * @returns The formatted percentage value. * * @see `formatNumber()` * @see `DecimalPipe` * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview) * @publicApi * */ export function formatPercent(value, locale, digitsInfo) { const format = getLocaleNumberFormat(locale, NumberFormatStyle.Percent); const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign)); const res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo, true); return res.replace(new RegExp(PERCENT_CHAR, 'g'), getLocaleNumberSymbol(locale, NumberSymbol.PercentSign)); } /** * @ngModule CommonModule * @description * * Formats a number as text, with group sizing, separator, and other * parameters based on the locale. * * @param value The number to format. * @param locale A locale code for the locale format rules to use. * @param digitsInfo Decimal representation options, specified by a string in the following format: * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details. * * @returns The formatted text string. * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview) * * @publicApi */ export function formatNumber(value, locale, digitsInfo) { const format = getLocaleNumberFormat(locale, NumberFormatStyle.Decimal); const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign)); return formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo); } function parseNumberFormat(format, minusSign = '-') { const p = { minInt: 1, minFrac: 0, maxFrac: 0, posPre: '', posSuf: '', negPre: '', negSuf: '', gSize: 0, lgSize: 0 }; const patternParts = format.split(PATTERN_SEP); const positive = patternParts[0]; const negative = patternParts[1]; const positiveParts = positive.indexOf(DECIMAL_SEP) !== -1 ? positive.split(DECIMAL_SEP) : [ positive.substring(0, positive.lastIndexOf(ZERO_CHAR) + 1), positive.substring(positive.lastIndexOf(ZERO_CHAR) + 1) ], integer = positiveParts[0], fraction = positiveParts[1] || ''; p.posPre = integer.substring(0, integer.indexOf(DIGIT_CHAR)); for (let i = 0; i < fraction.length; i++) { const ch = fraction.charAt(i); if (ch === ZERO_CHAR) { p.minFrac = p.maxFrac = i + 1; } else if (ch === DIGIT_CHAR) { p.maxFrac = i + 1; } else { p.posSuf += ch; } } const groups = integer.split(GROUP_SEP); p.gSize = groups[1] ? groups[1].length : 0; p.lgSize = (groups[2] || groups[1]) ? (groups[2] || groups[1]).length : 0; if (negative) { const trunkLen = positive.length - p.posPre.length - p.posSuf.length, pos = negative.indexOf(DIGIT_CHAR); p.negPre = negative.substring(0, pos).replace(/'/g, ''); p.negSuf = negative.slice(pos + trunkLen).replace(/'/g, ''); } else { p.negPre = minusSign + p.posPre; p.negSuf = p.posSuf; } return p; } // Transforms a parsed number into a percentage by multiplying it by 100 function toPercent(parsedNumber) { // if the number is 0, don't do anything if (parsedNumber.digits[0] === 0) { return parsedNumber; } // Getting the current number of decimals const fractionLen = parsedNumber.digits.length - parsedNumber.integerLen; if (parsedNumber.exponent) { parsedNumber.exponent += 2; } else { if (fractionLen === 0) { parsedNumber.digits.push(0, 0); } else if (fractionLen === 1) { parsedNumber.digits.push(0); } parsedNumber.integerLen += 2; } return parsedNumber; } /** * Parses a number. * Significant bits of this parse algorithm came from https://github.com/MikeMcl/big.js/ */ function parseNumber(num) { let numStr = Math.abs(num) + ''; let exponent = 0, digits, integerLen; let i, j, zeros; // Decimal point? if ((integerLen = numStr.indexOf(DECIMAL_SEP)) > -1) { numStr = numStr.replace(DECIMAL_SEP, ''); } // Exponential form? if ((i = numStr.search(/e/i)) > 0) { // Work out the exponent. if (integerLen < 0) integerLen = i; integerLen += +numStr.slice(i + 1); numStr = numStr.substring(0, i); } else if (integerLen < 0) { // There was no decimal point or exponent so it is an integer. integerLen = numStr.length; } // Count the number of leading zeros. for (i = 0; numStr.charAt(i) === ZERO_CHAR; i++) { /* empty */ } if (i === (zeros = numStr.length)) { // The digits are all zero. digits = [0]; integerLen = 1; } else { // Count the number of trailing zeros zeros--; while (numStr.charAt(zeros) === ZERO_CHAR) zeros--; // Trailing zeros are insignificant so ignore them integerLen -= i; digits = []; // Convert string to array of digits without leading/trailing zeros. for (j = 0; i <= zeros; i++, j++) { digits[j] = Number(numStr.charAt(i)); } } // If the number overflows the maximum allowed digits then use an exponent. if (integerLen > MAX_DIGITS) { digits = digits.splice(0, MAX_DIGITS - 1); exponent = integerLen - 1; integerLen = 1; } return { digits, exponent, integerLen }; } /** * Round the parsed number to the specified number of decimal places * This function changes the parsedNumber in-place */ function roundNumber(parsedNumber, minFrac, maxFrac) { if (minFrac > maxFrac) { throw new Error(`The minimum number of digits after fraction (${minFrac}) is higher than the maximum (${maxFrac}).`); } let digits = parsedNumber.digits; let fractionLen = digits.length - parsedNumber.integerLen; const fractionSize = Math.min(Math.max(minFrac, fractionLen), maxFrac); // The index of the digit to where rounding is to occur let roundAt = fractionSize + parsedNumber.integerLen; let digit = digits[roundAt]; if (roundAt > 0) { // Drop fractional digits beyond `roundAt` digits.splice(Math.max(parsedNumber.integerLen, roundAt)); // Set non-fractional digits beyond `roundAt` to 0 for (let j = roundAt; j < digits.length; j++) { digits[j] = 0; } } else { // We rounded to zero so reset the parsedNumber fractionLen = Math.max(0, fractionLen); parsedNumber.integerLen = 1; digits.length = Math.max(1, roundAt = fractionSize + 1); digits[0] = 0; for (let i = 1; i < roundAt; i++) digits[i] = 0; } if (digit >= 5) { if (roundAt - 1 < 0) { for (let k = 0; k > roundAt; k--) { digits.unshift(0); parsedNumber.integerLen++; } digits.unshift(1); parsedNumber.integerLen++; } else { digits[roundAt - 1]++; } } // Pad out with zeros to get the required fraction length for (; fractionLen < Math.max(0, fractionSize); fractionLen++) digits.push(0); let dropTrailingZeros = fractionSize !== 0; // Minimal length = nb of decimals required + current nb of integers // Any number besides that is optional and can be removed if it's a trailing 0 const minLen = minFrac + parsedNumber.integerLen; // Do any carrying, e.g. a digit was rounded up to 10 const carry = digits.reduceRight(function (carry, d, i, digits) { d = d + carry; digits[i] = d < 10 ? d : d - 10; // d % 10 if (dropTrailingZeros) { // Do not keep meaningless fractional trailing zeros (e.g. 15.52000 --> 15.52) if (digits[i] === 0 && i >= minLen) { digits.pop(); } else { dropTrailingZeros = false; } } return d >= 10 ? 1 : 0; // Math.floor(d / 10); }, 0); if (carry) { digits.unshift(carry); parsedNumber.integerLen++; } } export function parseIntAutoRadix(text) { const result = parseInt(text); if (isNaN(result)) { throw new Error('Invalid integer literal when parsing ' + text); } return result; } //# 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maxFraction) {\n        maxFraction = minFraction;\n      }\n    }\n\n    roundNumber(parsedNumber, minFraction, maxFraction);\n\n    let digits = parsedNumber.digits;\n    let integerLen = parsedNumber.integerLen;\n    const exponent = parsedNumber.exponent;\n    let decimals = [];\n    isZero = digits.every(d => !d);\n\n    // pad zeros for small numbers\n    for (; integerLen < minInt; integerLen++) {\n      digits.unshift(0);\n    }\n\n    // pad zeros for small numbers\n    for (; integerLen < 0; integerLen++) {\n      digits.unshift(0);\n    }\n\n    // extract decimals digits\n    if (integerLen > 0) {\n      decimals = digits.splice(integerLen, digits.length);\n    } else {\n      decimals = digits;\n      digits = [0];\n    }\n\n    // format the integer digits with grouping separators\n    const groups = [];\n    if (digits.length >= pattern.lgSize) {\n      groups.unshift(digits.splice(-pattern.lgSize, digits.length).join(''));\n    }\n\n    while (digits.length > 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See `DecimalPipe` for more details.\n *\n * @returns The formatted currency value.\n *\n * @see `formatNumber()`\n * @see `DecimalPipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nexport function formatCurrency(\n    value: number, locale: string, currency: string, currencyCode?: string,\n    digitsInfo?: string): string {\n  const format = getLocaleNumberFormat(locale, NumberFormatStyle.Currency);\n  const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n\n  pattern.minFrac = getNumberOfCurrencyDigits(currencyCode!);\n  pattern.maxFrac = pattern.minFrac;\n\n  const res = formatNumberToLocaleString(\n      value, pattern, locale, NumberSymbol.CurrencyGroup, NumberSymbol.CurrencyDecimal, digitsInfo);\n  return res\n      .replace(CURRENCY_CHAR, currency)\n      // if we have 2 time the currency character, the second one is ignored\n      .replace(CURRENCY_CHAR, '')\n      // If there is a spacing between currency character and the value and\n      // the currency character is suppressed by passing an empty string, the\n      // spacing character would remain as part of the string. 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See `DecimalPipe` for more details.\n *\n * @returns The formatted percentage value.\n *\n * @see `formatNumber()`\n * @see `DecimalPipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n * @publicApi\n *\n */\nexport function formatPercent(value: number, locale: string, digitsInfo?: string): string {\n  const format = getLocaleNumberFormat(locale, NumberFormatStyle.Percent);\n  const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n  const res = formatNumberToLocaleString(\n      value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo, true);\n  return res.replace(\n      new RegExp(PERCENT_CHAR, 'g'), getLocaleNumberSymbol(locale, NumberSymbol.PercentSign));\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as text, with group sizing, separator, and other\n * parameters based on the locale.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted text string.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nexport function formatNumber(value: number, locale: string, digitsInfo?: string): string {\n  const format = getLocaleNumberFormat(locale, NumberFormatStyle.Decimal);\n  const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n  return formatNumberToLocaleString(\n      value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo);\n}\n\ninterface ParsedNumberFormat {\n  minInt: number;\n  // the minimum number of digits required in the fraction part of the number\n  minFrac: number;\n  // the maximum number of digits required in the fraction part of the number\n  maxFrac: number;\n  // the prefix for a positive number\n  posPre: string;\n  // the suffix for a positive number\n  posSuf: string;\n  // the prefix for a negative number (e.g. `-` or `(`))\n  negPre: string;\n  // the suffix for a negative number (e.g. `)`)\n  negSuf: string;\n  // number of digits in each group of separated digits\n  gSize: number;\n  // number of digits in the last group of digits before the decimal separator\n  lgSize: number;\n}\n\nfunction parseNumberFormat(format: string, minusSign = '-'): ParsedNumberFormat {\n  const p = {\n    minInt: 1,\n    minFrac: 0,\n    maxFrac: 0,\n    posPre: '',\n    posSuf: '',\n    negPre: '',\n    negSuf: '',\n    gSize: 0,\n    lgSize: 0\n  };\n\n  const patternParts = format.split(PATTERN_SEP);\n  const positive = patternParts[0];\n  const negative = patternParts[1];\n\n  const positiveParts = positive.indexOf(DECIMAL_SEP) !== -1 ?\n      positive.split(DECIMAL_SEP) :\n      [\n        positive.substring(0, positive.lastIndexOf(ZERO_CHAR) + 1),\n        positive.substring(positive.lastIndexOf(ZERO_CHAR) + 1)\n      ],\n        integer = positiveParts[0], fraction = positiveParts[1] || '';\n\n  p.posPre = integer.substring(0, integer.indexOf(DIGIT_CHAR));\n\n  for (let i = 0; i < fraction.length; i++) {\n    const ch = fraction.charAt(i);\n    if (ch === ZERO_CHAR) {\n      p.minFrac = p.maxFrac = i + 1;\n    } else if (ch === DIGIT_CHAR) {\n      p.maxFrac = i + 1;\n    } else {\n      p.posSuf += ch;\n    }\n  }\n\n  const groups = integer.split(GROUP_SEP);\n  p.gSize = groups[1] ? groups[1].length : 0;\n  p.lgSize = (groups[2] || groups[1]) ? (groups[2] || groups[1]).length : 0;\n\n  if (negative) {\n    const trunkLen = positive.length - p.posPre.length - p.posSuf.length,\n          pos = negative.indexOf(DIGIT_CHAR);\n\n    p.negPre = negative.substring(0, pos).replace(/'/g, '');\n    p.negSuf = negative.slice(pos + trunkLen).replace(/'/g, '');\n  } else {\n    p.negPre = minusSign + p.posPre;\n    p.negSuf = p.posSuf;\n  }\n\n  return p;\n}\n\ninterface ParsedNumber {\n  // an array of digits containing leading zeros as necessary\n  digits: number[];\n  // the exponent for numbers that would need more than `MAX_DIGITS` digits in `d`\n  exponent: number;\n  // the number of the digits in `d` that are to the left of the decimal point\n  integerLen: number;\n}\n\n// Transforms a parsed number into a percentage by multiplying it by 100\nfunction toPercent(parsedNumber: ParsedNumber): ParsedNumber {\n  // if the number is 0, don't do anything\n  if (parsedNumber.digits[0] === 0) {\n    return parsedNumber;\n  }\n\n  // Getting the current number of decimals\n  const fractionLen = parsedNumber.digits.length - parsedNumber.integerLen;\n  if (parsedNumber.exponent) {\n    parsedNumber.exponent += 2;\n  } else {\n    if (fractionLen === 0) {\n      parsedNumber.digits.push(0, 0);\n    } else if (fractionLen === 1) {\n      parsedNumber.digits.push(0);\n    }\n    parsedNumber.integerLen += 2;\n  }\n\n  return parsedNumber;\n}\n\n/**\n * Parses a number.\n * Significant bits of this parse algorithm came from https://github.com/MikeMcl/big.js/\n */\nfunction parseNumber(num: number): ParsedNumber {\n  let numStr = Math.abs(num) + '';\n  let exponent = 0, digits, integerLen;\n  let i, j, zeros;\n\n  // Decimal point?\n  if ((integerLen = numStr.indexOf(DECIMAL_SEP)) > -1) {\n    numStr = numStr.replace(DECIMAL_SEP, '');\n  }\n\n  // Exponential form?\n  if ((i = numStr.search(/e/i)) > 0) {\n    // Work out the exponent.\n    if (integerLen < 0) integerLen = i;\n    integerLen += +numStr.slice(i + 1);\n    numStr = numStr.substring(0, i);\n  } else if (integerLen < 0) {\n    // There was no decimal point or exponent so it is an integer.\n    integerLen = numStr.length;\n  }\n\n  // Count the number of leading zeros.\n  for (i = 0; numStr.charAt(i) === ZERO_CHAR; i++) { /* empty */\n  }\n\n  if (i === (zeros = numStr.length)) {\n    // The digits are all zero.\n    digits = [0];\n    integerLen = 1;\n  } else {\n    // Count the number of trailing zeros\n    zeros--;\n    while (numStr.charAt(zeros) === ZERO_CHAR) zeros--;\n\n    // Trailing zeros are insignificant so ignore them\n    integerLen -= i;\n    digits = [];\n    // Convert string to array of digits without leading/trailing zeros.\n    for (j = 0; i <= zeros; i++, j++) {\n      digits[j] = Number(numStr.charAt(i));\n    }\n  }\n\n  // If the number overflows the maximum allowed digits then use an exponent.\n  if (integerLen > MAX_DIGITS) {\n    digits = digits.splice(0, MAX_DIGITS - 1);\n    exponent = integerLen - 1;\n    integerLen = 1;\n  }\n\n  return {digits, exponent, integerLen};\n}\n\n/**\n * Round the parsed number to the specified number of decimal places\n * This function changes the parsedNumber in-place\n */\nfunction roundNumber(parsedNumber: ParsedNumber, minFrac: number, maxFrac: number) {\n  if (minFrac > maxFrac) {\n    throw new Error(`The minimum number of digits after fraction (${\n        minFrac}) is higher than the maximum (${maxFrac}).`);\n  }\n\n  let digits = parsedNumber.digits;\n  let fractionLen = digits.length - parsedNumber.integerLen;\n  const fractionSize = Math.min(Math.max(minFrac, fractionLen), maxFrac);\n\n  // The index of the digit to where rounding is to occur\n  let roundAt = fractionSize + parsedNumber.integerLen;\n  let digit = digits[roundAt];\n\n  if (roundAt > 0) {\n    // Drop fractional digits beyond `roundAt`\n    digits.splice(Math.max(parsedNumber.integerLen, roundAt));\n\n    // Set non-fractional digits beyond `roundAt` to 0\n    for (let j = roundAt; j < digits.length; j++) {\n      digits[j] = 0;\n    }\n  } else {\n    // We rounded to zero so reset the parsedNumber\n    fractionLen = Math.max(0, fractionLen);\n    parsedNumber.integerLen = 1;\n    digits.length = Math.max(1, roundAt = fractionSize + 1);\n    digits[0] = 0;\n    for (let i = 1; i < roundAt; i++) digits[i] = 0;\n  }\n\n  if (digit >= 5) {\n    if (roundAt - 1 < 0) {\n      for (let k = 0; k > roundAt; k--) {\n        digits.unshift(0);\n        parsedNumber.integerLen++;\n      }\n      digits.unshift(1);\n      parsedNumber.integerLen++;\n    } else {\n      digits[roundAt - 1]++;\n    }\n  }\n\n  // Pad out with zeros to get the required fraction length\n  for (; fractionLen < Math.max(0, fractionSize); fractionLen++) digits.push(0);\n\n  let dropTrailingZeros = fractionSize !== 0;\n  // Minimal length = nb of decimals required + current nb of integers\n  // Any number besides that is optional and can be removed if it's a trailing 0\n  const minLen = minFrac + parsedNumber.integerLen;\n  // Do any carrying, e.g. a digit was rounded up to 10\n  const carry = digits.reduceRight(function(carry, d, i, digits) {\n    d = d + carry;\n    digits[i] = d < 10 ? d : d - 10;  // d % 10\n    if (dropTrailingZeros) {\n      // Do not keep meaningless fractional trailing zeros (e.g. 15.52000 --> 15.52)\n      if (digits[i] === 0 && i >= minLen) {\n        digits.pop();\n      } else {\n        dropTrailingZeros = false;\n      }\n    }\n    return d >= 10 ? 1 : 0;  // Math.floor(d / 10);\n  }, 0);\n  if (carry) {\n    digits.unshift(carry);\n    parsedNumber.integerLen++;\n  }\n}\n\nexport function parseIntAutoRadix(text: string): number {\n  const result: number = parseInt(text);\n  if (isNaN(result)) {\n    throw new Error('Invalid integer literal when parsing ' + text);\n  }\n  return result;\n}\n"]}