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