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node_modules/loupe/lib/helpers.js

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+const ansiColors = {
+  bold: ['1', '22'],
+  dim: ['2', '22'],
+  italic: ['3', '23'],
+  underline: ['4', '24'],
+  // 5 & 6 are blinking
+  inverse: ['7', '27'],
+  hidden: ['8', '28'],
+  strike: ['9', '29'],
+  // 10-20 are fonts
+  // 21-29 are resets for 1-9
+  black: ['30', '39'],
+  red: ['31', '39'],
+  green: ['32', '39'],
+  yellow: ['33', '39'],
+  blue: ['34', '39'],
+  magenta: ['35', '39'],
+  cyan: ['36', '39'],
+  white: ['37', '39'],
+
+  brightblack: ['30;1', '39'],
+  brightred: ['31;1', '39'],
+  brightgreen: ['32;1', '39'],
+  brightyellow: ['33;1', '39'],
+  brightblue: ['34;1', '39'],
+  brightmagenta: ['35;1', '39'],
+  brightcyan: ['36;1', '39'],
+  brightwhite: ['37;1', '39'],
+
+  grey: ['90', '39'],
+}
+
+const styles = {
+  special: 'cyan',
+  number: 'yellow',
+  bigint: 'yellow',
+  boolean: 'yellow',
+  undefined: 'grey',
+  null: 'bold',
+  string: 'green',
+  symbol: 'green',
+  date: 'magenta',
+  regexp: 'red',
+}
+
+export const truncator = '…'
+
+function colorise(value, styleType) {
+  const color = ansiColors[styles[styleType]] || ansiColors[styleType]
+  if (!color) {
+    return String(value)
+  }
+  return `\u001b[${color[0]}m${String(value)}\u001b[${color[1]}m`
+}
+
+export function normaliseOptions({
+  showHidden = false,
+  depth = 2,
+  colors = false,
+  customInspect = true,
+  showProxy = false,
+  maxArrayLength = Infinity,
+  breakLength = Infinity,
+  seen = [],
+  // eslint-disable-next-line no-shadow
+  truncate = Infinity,
+  stylize = String,
+} = {}) {
+  const options = {
+    showHidden: Boolean(showHidden),
+    depth: Number(depth),
+    colors: Boolean(colors),
+    customInspect: Boolean(customInspect),
+    showProxy: Boolean(showProxy),
+    maxArrayLength: Number(maxArrayLength),
+    breakLength: Number(breakLength),
+    truncate: Number(truncate),
+    seen,
+    stylize,
+  }
+  if (options.colors) {
+    options.stylize = colorise
+  }
+  return options
+}
+
+export function truncate(string, length, tail = truncator) {
+  string = String(string)
+  const tailLength = tail.length
+  const stringLength = string.length
+  if (tailLength > length && stringLength > tailLength) {
+    return tail
+  }
+  if (stringLength > length && stringLength > tailLength) {
+    return `${string.slice(0, length - tailLength)}${tail}`
+  }
+  return string
+}
+
+// eslint-disable-next-line complexity
+export function inspectList(list, options, inspectItem, separator = ', ') {
+  inspectItem = inspectItem || options.inspect
+  const size = list.length
+  if (size === 0) return ''
+  const originalLength = options.truncate
+  let output = ''
+  let peek = ''
+  let truncated = ''
+  for (let i = 0; i < size; i += 1) {
+    const last = i + 1 === list.length
+    const secondToLast = i + 2 === list.length
+    truncated = `${truncator}(${list.length - i})`
+    const value = list[i]
+
+    // If there is more than one remaining we need to account for a separator of `, `
+    options.truncate = originalLength - output.length - (last ? 0 : separator.length)
+    const string = peek || inspectItem(value, options) + (last ? '' : separator)
+    const nextLength = output.length + string.length
+    const truncatedLength = nextLength + truncated.length
+
+    // If this is the last element, and adding it would
+    // take us over length, but adding the truncator wouldn't - then break now
+    if (last && nextLength > originalLength && output.length + truncated.length <= originalLength) {
+      break
+    }
+
+    // If this isn't the last or second to last element to scan,
+    // but the string is already over length then break here
+    if (!last && !secondToLast && truncatedLength > originalLength) {
+      break
+    }
+
+    // Peek at the next string to determine if we should
+    // break early before adding this item to the output
+    peek = last ? '' : inspectItem(list[i + 1], options) + (secondToLast ? '' : separator)
+
+    // If we have one element left, but this element and
+    // the next takes over length, the break early
+    if (!last && secondToLast && truncatedLength > originalLength && nextLength + peek.length > originalLength) {
+      break
+    }
+
+    output += string
+
+    // If the next element takes us to length -
+    // but there are more after that, then we should truncate now
+    if (!last && !secondToLast && nextLength + peek.length >= originalLength) {
+      truncated = `${truncator}(${list.length - i - 1})`
+      break
+    }
+
+    truncated = ''
+  }
+  return `${output}${truncated}`
+}
+
+function quoteComplexKey(key) {
+  if (key.match(/^[a-zA-Z_][a-zA-Z_0-9]*$/)) {
+    return key
+  }
+  return JSON.stringify(key)
+    .replace(/'/g, "\\'")
+    .replace(/\\"/g, '"')
+    .replace(/(^"|"$)/g, "'")
+}
+
+export function inspectProperty([key, value], options) {
+  options.truncate -= 2
+  if (typeof key === 'string') {
+    key = quoteComplexKey(key)
+  } else if (typeof key !== 'number') {
+    key = `[${options.inspect(key, options)}]`
+  }
+  options.truncate -= key.length
+  value = options.inspect(value, options)
+  return `${key}: ${value}`
+}