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{ max, min, range } from 'd3-array';\nimport { scaleLinear, scaleLog, scaleOrdinal, scaleSqrt, ScaleLinear } from 'd3-scale';\nimport { schemeCategory10 } from 'd3-scale-chromatic';\nimport type { Word, MinMaxPair, Scale } from './types.js';\n\n/**\n * Extended Word interface with layout properties\n * These properties are added by d3-cloud during layout calculation\n */\nexport interface LayoutWord extends Word {\n size?: number;\n x?: number;\n y?: number;\n rotate?: number;\n}\n\n/**\n * Random number generator function type\n */\ntype RandomFunction = () => number;\n\n/**\n * Choose a random element from an array\n * @param array - Array to choose from\n * @param random - Random number generator function\n * @returns Randomly selected element\n */\nexport function choose(array: T[], random: RandomFunction): T {\n return array[Math.floor(random() * array.length)];\n}\n\n/**\n * Get default color scheme (D3 Category10 with 20 colors)\n * @returns Array of 20 colors\n */\nexport function getDefaultColors(): string[] {\n return range(20)\n .map((number) => number.toString())\n .map(scaleOrdinal(schemeCategory10));\n}\n\n/**\n * Create a D3 scale function for font sizes based on word values\n * @param words - Array of words\n * @param fontSizes - Min and max font sizes [min, max]\n * @param scale - Scale type ('linear', 'log', or 'sqrt')\n * @returns D3 scale function\n */\nexport function getFontScale(\n words: Word[],\n fontSizes: MinMaxPair,\n scale: Scale\n): ScaleLinear {\n const minSize = min(words, (word) => Number(word.value)) ?? 0;\n const maxSize = max(words, (word) => Number(word.value)) ?? 0;\n\n let fontScale: ScaleLinear;\n\n switch (scale) {\n case 'log':\n fontScale = scaleLog().domain([minSize, maxSize]).range(fontSizes);\n break;\n case 'sqrt':\n fontScale = scaleSqrt().domain([minSize, maxSize]).range(fontSizes);\n break;\n case 'linear':\n default:\n fontScale = scaleLinear().domain([minSize, maxSize]).range(fontSizes);\n break;\n }\n\n return fontScale;\n}\n\n/**\n * Get font size CSS string from word\n * @param word - Word with size property set by layout\n * @returns Font size string (e.g., \"24px\")\n */\nexport function getFontSize(word: LayoutWord): string {\n return `${word.size ?? 0}px`;\n}\n\n/**\n * Get text content from word\n * @param word - Word object\n * @returns Text content\n */\nexport function getText(word: Word): string {\n return word.text;\n}\n\n/**\n * Get SVG transform attribute value for word positioning\n * @param word - Word with x, y, and rotate properties set by layout\n * @returns Transform string (e.g., \"translate(100, 50)rotate(45)\")\n */\nexport function getTransform(word: LayoutWord): string {\n const translate = `translate(${word.x ?? 0}, ${word.y ?? 0})`;\n const rotate = typeof word.rotate === 'number' ? `rotate(${word.rotate})` : '';\n return translate + rotate;\n}\n\n/**\n * Calculate rotation angle for a word\n * @param rotations - Number of rotation angles to generate\n * @param rotationAngles - Min and max rotation angles [min, max]\n * @param random - Random number generator function\n * @returns Rotation angle in degrees\n */\nexport function rotate(\n rotations: number,\n rotationAngles: MinMaxPair,\n random: RandomFunction\n): number {\n if (rotations < 1) {\n return 0;\n }\n\n let angles: number[] = [];\n\n if (rotations === 1) {\n angles = [rotationAngles[0]];\n } else {\n angles = [...rotationAngles];\n const increment = (rotationAngles[1] - rotationAngles[0]) / (rotations - 1);\n let angle = rotationAngles[0] + increment;\n while (angle < rotationAngles[1]) {\n angles.push(angle);\n angle += increment;\n }\n }\n\n return choose(angles, random);\n}\n","import { select } from 'd3-selection';\nimport { useEffect, useRef, useState } from 'react';\nimport ResizeObserver from 'resize-observer-polyfill';\nimport type { MinMaxPair, Selection } from './types.js';\nimport type { AttributeValue } from './types.js';\n\n/**\n * Custom hook for creating a responsive SVG with D3 selection\n * Handles SVG creation, responsive resizing, and cleanup\n *\n * @param minSize - Minimum [width, height] for the SVG\n * @param initialSize - Optional fixed [width, height]. If undefined, SVG is responsive\n * @param svgAttributes - Optional SVG attributes to apply\n * @returns Tuple of [elementRef, d3Selection, currentSize]\n * elementRef.current는 마운트 전 null이므로 React 19 타입 규칙에 맞춰 null을 포함한다\n */\nexport function useResponsiveSvgSelection(\n minSize: MinMaxPair,\n initialSize: MinMaxPair | undefined,\n svgAttributes: Record | undefined\n): [React.RefObject, Selection | null, MinMaxPair] {\n const elementRef = useRef(null);\n const [size, setSize] = useState(initialSize ?? [0, 0]);\n const [selection, setSelection] = useState(null);\n\n useEffect(() => {\n const element = elementRef.current;\n if (!element) {\n return;\n }\n\n // Create SVG element with D3\n let svg = select(element).append('svg').style('display', 'block'); // Native inline svg leaves undesired white space\n\n // Apply custom SVG attributes if provided\n if (typeof svgAttributes === 'object' && svgAttributes !== null) {\n Object.keys(svgAttributes).forEach((key) => {\n const value = svgAttributes[key];\n if (typeof value === 'string') {\n svg = svg.attr(key, value);\n } else if (typeof value === 'function') {\n // AttributeValue can be a callback, but for SVG attributes we expect strings\n // This maintains compatibility with the original API\n svg = svg.attr(key, value as unknown as string);\n }\n });\n }\n\n // Create group element for word cloud content\n const selectionGroup = svg.append('g');\n setSelection(selectionGroup as unknown as Selection);\n\n /**\n * Update SVG and group dimensions\n */\n function updateSize(width: number, height: number): void {\n svg.attr('height', height).attr('width', width);\n selectionGroup.attr('transform', `translate(${width / 2}, ${height / 2})`);\n setSize([width, height]);\n }\n\n // Calculate initial size\n let width = 0;\n let height = 0;\n\n if (initialSize === undefined) {\n // Use parent element size for responsive mode\n const parent = element.parentElement;\n if (parent) {\n width = parent.offsetWidth;\n height = parent.offsetHeight;\n }\n } else {\n // Use fixed size if provided\n [width, height] = initialSize;\n }\n\n // Apply minimum size constraints\n width = Math.max(width, minSize[0]);\n height = Math.max(height, minSize[1]);\n updateSize(width, height);\n\n // Set up ResizeObserver for responsive sizing\n const resizeObserver = new ResizeObserver((entries: ResizeObserverEntry[]) => {\n if (!entries || entries.length === 0) {\n return;\n }\n\n // Only update size if in responsive mode (no initialSize provided)\n if (initialSize === undefined) {\n const { width: newWidth, height: newHeight } = entries[0].contentRect;\n const constrainedWidth = Math.max(newWidth, minSize[0]);\n const constrainedHeight = Math.max(newHeight, minSize[1]);\n updateSize(constrainedWidth, constrainedHeight);\n }\n });\n\n resizeObserver.observe(element);\n\n // Cleanup function\n return () => {\n resizeObserver.unobserve(element);\n select(element).selectAll('*').remove();\n };\n // eslint-disable-next-line react-hooks/exhaustive-deps\n }, []);\n\n return [elementRef, selection, size];\n}\n","import 'd3-transition';\nimport { descending } from 'd3-array';\nimport d3Cloud from 'd3-cloud';\nimport seedrandom from 'seedrandom';\nimport tippy, { Instance as TippyInstance } from 'tippy.js';\nimport type { Word, MinMaxPair, Options, CallbacksProp, Selection } from './types.js';\nimport type { LayoutWord } from './utils.js';\nimport { choose, getFontScale, getFontSize, getText, getTransform, rotate } from './utils.js';\n\n/**\n * Layout function parameters\n */\nexport interface LayoutParams {\n callbacks: CallbacksProp;\n maxWords: number;\n options: Required;\n selection: Selection;\n size: MinMaxPair;\n words: Word[];\n}\n\n/**\n * Layout function - configures and executes d3-cloud word layout\n * Implements recursive font scaling to fit all words\n *\n * @param params - Layout parameters\n */\nexport function layout(params: LayoutParams): void {\n const MAX_LAYOUT_ATTEMPTS = 10;\n const SHRINK_FACTOR = 0.95;\n\n const { callbacks, maxWords, options, selection, size, words } = params;\n const {\n deterministic,\n fontFamily,\n fontStyle,\n fontSizes,\n fontWeight,\n padding,\n randomSeed,\n rotations,\n rotationAngles,\n spiral,\n scale,\n } = options;\n\n // Sort words by value (descending) and limit to maxWords\n const sortedWords = words\n .concat()\n .sort((x, y) => descending(x.value, y.value))\n .slice(0, maxWords);\n\n // Initialize random number generator\n const random = seedrandom(deterministic ? randomSeed || 'deterministic' : undefined);\n\n // Create d3-cloud instance\n const cloud = d3Cloud();\n\n // Configure cloud layout\n cloud\n .size(size)\n .padding(padding)\n .words(sortedWords.map((word) => ({ ...word }))) // Clone words to avoid mutation\n .rotate(() => {\n if (rotations === undefined) {\n // Default rotation algorithm: -90, -60, -30, 0, 30, 60, 90 degrees\n return (~~(random() * 6) - 3) * 30;\n }\n return rotate(rotations, rotationAngles, random);\n })\n .spiral(spiral)\n .random(random)\n .text(getText)\n .font(fontFamily)\n .fontStyle(fontStyle)\n .fontWeight(fontWeight);\n\n /**\n * Recursive draw function with font size adjustment\n * If not all words fit, shrink font sizes and retry\n */\n function draw(currentFontSizes: MinMaxPair, attempts = 1): void {\n cloud\n .fontSize((word) => {\n const fontScale = getFontScale(sortedWords, currentFontSizes, scale);\n return fontScale(word.value);\n })\n .on('end', (computedWords: LayoutWord[]) => {\n /**\n * KNOWN ISSUE: https://github.com/jasondavies/d3-cloud/issues/36\n * d3-cloud may fail to layout all words due to space constraints\n * Recursively layout and decrease font-sizes by SHRINK_FACTOR\n * Bail out with warning after MAX_LAYOUT_ATTEMPTS\n */\n const missingWords = sortedWords.length - computedWords.length;\n\n if (missingWords > 0 && attempts <= MAX_LAYOUT_ATTEMPTS) {\n if (attempts === MAX_LAYOUT_ATTEMPTS) {\n console.warn(\n `Unable to layout ${missingWords} word(s) after ${attempts} attempts. ` +\n `Consider: (1) Increasing container size, ` +\n `(2) Lowering max font size, ` +\n `(3) Limiting rotation angles.`\n );\n }\n\n // Shrink font sizes and retry\n const minFontSize = Math.max(currentFontSizes[0] * SHRINK_FACTOR, 1);\n const maxFontSize = Math.max(currentFontSizes[1] * SHRINK_FACTOR, minFontSize);\n\n draw([minFontSize, maxFontSize], attempts + 1);\n } else {\n // Layout successful or max attempts reached - render words\n render({\n callbacks,\n options,\n random,\n selection,\n words: computedWords,\n });\n }\n })\n .start();\n }\n\n // Start layout with initial font sizes\n draw(fontSizes);\n}\n\n/**\n * Render function parameters\n */\nexport interface RenderParams {\n callbacks: CallbacksProp;\n options: Required;\n random: seedrandom.PRNG;\n selection: Selection;\n words: LayoutWord[];\n}\n\n/**\n * Render function - renders words using D3 selection with enter-update-exit pattern\n * Handles SVG text elements, transitions, tooltips, and event handlers\n *\n * @param params - Render parameters\n */\nexport function render(params: RenderParams): void {\n const { callbacks, options, random, selection, words } = params;\n const { getWordColor, getWordTooltip, onWordClick, onWordMouseOver, onWordMouseOut } = callbacks;\n const { colors, enableTooltip, fontStyle, fontWeight, textAttributes, tooltipOptions } = options;\n const { fontFamily, transitionDuration } = options;\n\n /**\n * Get fill color for a word\n */\n function getFill(word: LayoutWord): string {\n return getWordColor ? getWordColor(word) : choose(colors, random);\n }\n\n // Tooltip instance tracking\n let tooltipInstance: TippyInstance | null = null;\n\n // Select all text elements and bind data\n const vizWords = selection.selectAll('text').data(words);\n\n // Enter-update-exit pattern\n vizWords.join(\n // Enter: create new text elements\n (enter) => {\n let text = enter\n .append('text')\n .on('click', function (event: MouseEvent, word: LayoutWord) {\n if (onWordClick) {\n onWordClick(word, event);\n }\n })\n .on('mouseover', function (event: MouseEvent, word: LayoutWord) {\n if (enableTooltip && (!tooltipInstance || tooltipInstance.state.isDestroyed)) {\n tooltipInstance = tippy(event.target as Element, {\n animation: 'scale',\n arrow: true,\n content: () => (getWordTooltip ? getWordTooltip(word) : word.text),\n onHidden: (instance) => {\n instance.destroy();\n tooltipInstance = null;\n },\n ...tooltipOptions,\n });\n }\n\n if (onWordMouseOver) {\n onWordMouseOver(word, event);\n }\n })\n .on('mouseout', function (event: MouseEvent, word: LayoutWord) {\n if (tooltipInstance && !tooltipInstance.state.isVisible) {\n tooltipInstance.destroy();\n tooltipInstance = null;\n }\n\n if (onWordMouseOut) {\n onWordMouseOut(word, event);\n }\n })\n .attr('cursor', onWordClick ? 'pointer' : 'default')\n .attr('fill', getFill)\n .attr('font-family', fontFamily)\n .attr('font-style', fontStyle)\n .attr('font-weight', fontWeight)\n .attr('text-anchor', 'middle')\n .attr('transform', 'translate(0, 0) rotate(0)');\n\n // Apply custom text attributes if provided\n if (typeof textAttributes === 'object' && textAttributes !== null) {\n Object.keys(textAttributes).forEach((key) => {\n const value = textAttributes[key];\n if (typeof value === 'string') {\n text = text.attr(key, value);\n } else if (typeof value === 'function') {\n // AttributeValue는 콜백일 수 있으며, typeof 검사로 이미 좁혀져 별도 단언이 필요 없다\n text = text.attr(key, value);\n }\n });\n }\n\n // Transition to final state\n text.call((enter) =>\n enter\n .transition()\n .duration(transitionDuration)\n .attr('font-size', getFontSize)\n .attr('transform', getTransform)\n .text(getText)\n );\n\n return text;\n },\n // Update: update existing text elements\n (update) => {\n update\n .transition()\n .duration(transitionDuration)\n .attr('fill', getFill)\n .attr('font-family', fontFamily)\n .attr('font-size', getFontSize)\n .attr('transform', getTransform)\n .text(getText);\n\n return update;\n },\n // Exit: remove text elements with fade out\n (exit) => {\n exit.transition().duration(transitionDuration).attr('fill-opacity', 0).remove();\n\n return exit;\n }\n );\n}\n","import type { Callbacks, Options, Word } from './types.js';\nimport { getDefaultColors } from './utils.js';\n\n/**\n * Default callback functions\n */\nexport const defaultCallbacks: Callbacks = {\n getWordTooltip: (word: Word) => `${word.text} (${word.value})`,\n};\n\n/**\n * Default options for wordcloud\n */\nexport const defaultOptions: Options = {\n colors: getDefaultColors(),\n deterministic: false,\n enableOptimizations: false,\n enableTooltip: true,\n fontFamily: 'times new roman',\n fontSizes: [4, 32],\n fontStyle: 'normal',\n fontWeight: 'normal',\n padding: 1,\n rotationAngles: [-90, 90],\n scale: 'sqrt',\n spiral: 'rectangular',\n svgAttributes: {},\n textAttributes: {},\n tooltipOptions: {},\n transitionDuration: 600,\n};\n","import React, { useEffect, useMemo } from 'react';\nimport debounce from 'lodash.debounce';\nimport type { Props, Callbacks, Options } from './types.js';\nimport { useResponsiveSvgSelection } from './hooks.js';\nimport { layout, type LayoutParams } from './layout.js';\nimport { defaultCallbacks, defaultOptions } from './defaults.js';\n\n/**\n * ReactWordcloud component\n * Renders an interactive word cloud visualization using D3\n */\nexport function ReactWordcloud({\n callbacks = {},\n maxWords = 100,\n minSize = [300, 300],\n options = {},\n size,\n style,\n words,\n}: Props): React.JSX.Element {\n // Merge user-provided callbacks and options with defaults\n const mergedCallbacks: Callbacks = useMemo(\n () => ({\n ...defaultCallbacks,\n ...callbacks,\n }),\n [callbacks]\n );\n\n const mergedOptions: Options = useMemo(\n () => ({\n ...defaultOptions,\n ...options,\n }),\n [options]\n );\n\n // Memoize svgAttributes separately to prevent unnecessary re-renders\n const svgAttributes = useMemo(() => mergedOptions.svgAttributes, [mergedOptions.svgAttributes]);\n\n // Get responsive SVG selection and size\n const [ref, selection, calculatedSize] = useResponsiveSvgSelection(minSize, size, svgAttributes);\n\n // 렌더링 중 ref.current 접근을 피하기 위해 useMemo로 debounce 함수를 1회만 생성한다\n // (react-hooks/refs 규칙: 렌더 단계에서 ref 값을 읽을 수 없음)\n const debouncedLayout = useMemo(\n () =>\n debounce((params: LayoutParams) => {\n layout(params);\n }, 100),\n []\n );\n\n // 언마운트 시 대기 중인 debounce 호출 취소\n useEffect(() => {\n return () => {\n debouncedLayout.cancel();\n };\n }, [debouncedLayout]);\n\n // Trigger layout when dependencies change\n useEffect(() => {\n if (selection && words.length > 0) {\n debouncedLayout({\n callbacks: mergedCallbacks,\n maxWords,\n options: mergedOptions as Required,\n selection,\n size: calculatedSize,\n words,\n });\n }\n }, [selection, words, maxWords, calculatedSize, mergedCallbacks, mergedOptions, debouncedLayout]);\n\n return
;\n}\n\nexport default ReactWordcloud;\n"]}