{"id":7655,"date":"2025-10-01T01:17:00","date_gmt":"2025-10-01T01:17:00","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=7655"},"modified":"2025-10-01T01:17:00","modified_gmt":"2025-10-01T01:17:00","slug":"%e6%96%b0%e5%8d%92%e3%82%a8%e3%83%b3%e3%82%b8%e3%83%8b%e3%82%a2%e3%81%8c%e6%84%9f%e3%81%98%e3%81%9fchain-of-responsibility%e3%81%ae%e9%ad%85%e5%8a%9b%e3%81%a8%e5%ae%9f%e8%a3%85-kentem-techblog","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/7655\/","title":{"rendered":"\u65b0\u5352\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u611f\u3058\u305fChain of Responsibility\u306e\u9b45\u529b\u3068\u5b9f\u88c5 &#8211; KENTEM TechBlog"},"content":{"rendered":"\n<\/p>\n<div>\n<p><span itemscope=\"\" itemtype=\"http:\/\/schema.org\/Photograph\"><img decoding=\"async\" src=\"https:\/\/cdn-ak.f.st-hatena.com\/images\/fotolife\/k\/kentem_dev_yo_kobayashi\/20250929\/20250929124142.png\" width=\"1200\" height=\"630\" loading=\"lazy\" title=\"\" class=\"hatena-fotolife\" itemprop=\"image\"\/><\/span><\/p>\n<p>\u3053\u3093\u306b\u3061\u306f\uff01KENTEM\u306b\u5165\u793e\u3057\u30665\u304b\u6708\u76ee\u306e\u65b0\u5352\u30a8\u30f3\u30b8\u30cb\u30a2\u3001Y.K\u3067\u3059\u3002<\/p>\n<p>\u79c1\u306f\u73fe\u5728\u3001Next.js\u3092\u7528\u3044\u305fWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u306b\u643a\u308f\u3063\u3066\u3044\u307e\u3059\u30026\u6708\u306b\u88fd\u54c1\u958b\u767a\u90e8\u9580\u306b\u914d\u5c5e\u3055\u308c\u3066\u304b\u3089\u7d043\u304b\u6708\u304c\u7d4c\u3061\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u4e2d\u3067\u51fa\u4f1a\u3063\u305f\u9762\u767d\u3044\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3001<strong>CoR\uff08Chain of Responsibility\uff09<\/strong>\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>CoR\uff08Chain of Responsibility\uff09\u3068\u306f\u3001\u300c\u8cac\u4efb\u306e\u9023\u9396\u300d\u3068\u8a33\u3055\u308c\u308b\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u305d\u306e\u540d\u306e\u901a\u308a\u3001\u51e6\u7406\u306e\u8cac\u4efb\u3092\u8907\u6570\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u95a2\u6570\u306b\u5206\u6563\u3055\u305b\u3001\u9806\u756a\u306b\u51e6\u7406\u3092\u6e21\u3057\u3066\u3044\u304f\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4e8c\u6b21\u5143\u30c7\u30fc\u30bf\u306eNaN\u306e\u51e6\u7406\u3001\u6b63\u898f\u5316\u51e6\u7406\u3001\u30c0\u30df\u30fc\u5909\u6570\u51e6\u7406\u306e\u6d41\u308c\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\uff01\u3082\u3057\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u305b\u305a\u306b\u5b9f\u88c5\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p><span itemscope=\"\" itemtype=\"http:\/\/schema.org\/Photograph\"><img decoding=\"async\" src=\"https:\/\/cdn-ak.f.st-hatena.com\/images\/fotolife\/k\/kentem_dev_yo_kobayashi\/20250916\/20250916081239.png\" width=\"1200\" height=\"125\" loading=\"lazy\" title=\"\" class=\"hatena-fotolife\" itemprop=\"image\"\/><\/span><\/p>\n<p>\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001\u4e0a\u56f3\u3067\u6c34\u8272\u3067\u56f2\u308f\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u3059\u3079\u3066\u6761\u4ef6\u5206\u5c90\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u3001\u53ef\u8aad\u6027\u3084\u4fdd\u5b88\u6027\u304c\u4f4e\u4e0b\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057CoR\u3092\u63a1\u7528\u3057\u3066\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><span itemscope=\"\" itemtype=\"http:\/\/schema.org\/Photograph\"><img decoding=\"async\" src=\"https:\/\/cdn-ak.f.st-hatena.com\/images\/fotolife\/k\/kentem_dev_yo_kobayashi\/20250916\/20250916081202.png\" width=\"1200\" height=\"357\" loading=\"lazy\" title=\"\" class=\"hatena-fotolife\" itemprop=\"image\"\/><\/span><\/p>\n<p>\u3053\u308c\u306f\u5404\u51e6\u7406\u3067\u6b21\u306e\u51e6\u7406\u3092\u547c\u3076\u304b\u3001\u51e6\u7406\u3092\u6b62\u3081\u3066\u3057\u307e\u3046\u304b\u3068\u3044\u3046\u5b9f\u88c5\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3053\u306e\u3088\u3046\u306b\u3001\u5404\u51e6\u7406\u3092\u72ec\u7acb\u3057\u305f\u300c\u8cac\u4efb\u300d\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u898b\u901a\u3057\u304c\u826f\u304f\u306a\u308a\u3001\u518d\u5229\u7528\u6027\u3084\u62e1\u5f35\u6027\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<p>\u79c1\u306f\u5b66\u751f\u6642\u4ee3\u306bPython\u3092\u89e6\u3063\u305f\u7d4c\u9a13\u306f\u3042\u308a\u307e\u3057\u305f\u304c\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3084\u8a2d\u8a08\u3092\u610f\u8b58\u3057\u3066\u5b9f\u88c5\u3059\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u5165\u793e\u5f8c\u306e\u7814\u4fee\u3084\u696d\u52d9\u3092\u901a\u3058\u3066\u8a2d\u8a08\u306e\u91cd\u8981\u6027\u3092\u5b66\u3073\u3001\u610f\u8b58\u7684\u306b\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3088\u3046\u306b\u306a\u3063\u305f\u3053\u3068\u3067\u3001\u3053\u306eCoR\u30d1\u30bf\u30fc\u30f3\u306b\u51fa\u4f1a\u3044\u307e\u3057\u305f\u3002\u7406\u89e3\u304c\u6df1\u307e\u308b\u306b\u3064\u308c\u3066\u3001\u8a2d\u8a08\u3084\u30c7\u30b6\u30a4\u30f3\u306e\u5965\u6df1\u3055\u306b\u89e6\u308c\u3001\u975e\u5e38\u306b\u9762\u767d\u304f\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n<p>\u305d\u3057\u3066\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u3044\u3053\u306a\u305b\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3068\u304d\u3001\u81ea\u5206\u81ea\u8eab\u306e\u6210\u9577\u3092\u5b9f\u611f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u6700\u5f8c\u306b\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01\u4eca\u56de\u306f\u5148\u307b\u3069\u4f8b\u306b\u6319\u3052\u305f\u4e8c\u6b21\u5143\u30c7\u30fc\u30bf\u51e6\u7406\u306eTypeSctipt\u3067\u306e\u5b9f\u88c5\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\uff01<\/p>\n<div class=\"code-title\" data-title=\"preprocess-chain.ts\">\n<pre class=\"code lang-typescript\" data-lang=\"typescript\" data-unlink=\"\"><span class=\"synStatement\">type <\/span><span class=\"synIdentifier\">Data <\/span><span class=\"synStatement\">=<\/span> <span class=\"synIdentifier\">{<\/span> <span class=\"synIdentifier\">label<\/span>: <span class=\"synType\">string<\/span>[] <span class=\"synStatement\">|<\/span> <span class=\"synType\">null<\/span><span class=\"synStatement\">,<\/span> <span class=\"synIdentifier\">value<\/span>: <span class=\"synType\">number<\/span>[][] <span class=\"synStatement\">|<\/span> <span class=\"synType\">null<\/span> <span class=\"synIdentifier\">}<\/span>;\n<span class=\"synStatement\">type <\/span><span class=\"synIdentifier\">Processor <\/span><span class=\"synStatement\">=<\/span> (<span class=\"synSpecial\">data<\/span>:<span class=\"synSpecial\"> <\/span><span class=\"synIdentifier\">Data<\/span><span class=\"synStatement\">,<\/span><span class=\"synSpecial\"> next<\/span>:<span class=\"synSpecial\"> <\/span>(<span class=\"synSpecial\">v<\/span>:<span class=\"synSpecial\"> <\/span><span class=\"synIdentifier\">Data<\/span>) <span class=\"synIdentifier\">=&gt;<\/span><span class=\"synSpecial\"> <\/span><span class=\"synIdentifier\">Data<\/span>) <span class=\"synIdentifier\">=&gt;<\/span> <span class=\"synIdentifier\">Data<\/span>;\n\n<span class=\"synIdentifier\">const<\/span> handleMissing: <span class=\"synIdentifier\">Processor<\/span> = (<span class=\"synPreProc\">{ value<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> label }<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> next<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n  <span class=\"synStatement\">if<\/span> (!(value &amp;&amp; label)) <span class=\"synSpecial\">throw<\/span> <span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Error<\/span>(<span class=\"synConstant\">\"Invalid data in handleMissing\"<\/span>);\n  <span class=\"synSpecial\">try<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synIdentifier\">const<\/span> colMeans = value[<span class=\"synConstant\">0<\/span>].map((<span class=\"synPreProc\">_<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> col<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n      <span class=\"synIdentifier\">const<\/span> validValues = value\n        .<span class=\"synStatement\">map<\/span>(<span class=\"synPreProc\">row<\/span> <span class=\"synType\">=&gt;<\/span> row[col])\n        .<span class=\"synStatement\">filter<\/span>(<span class=\"synPreProc\">v<\/span> <span class=\"synType\">=&gt;<\/span> !<span class=\"synType\">Number<\/span>.<span class=\"synStatement\">isNaN<\/span>(v));\n      <span class=\"synIdentifier\">const<\/span> sum = validValues.<span class=\"synStatement\">reduce<\/span>((<span class=\"synPreProc\">a<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> b<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> a + b, <span class=\"synConstant\">0<\/span>);\n      <span class=\"synStatement\">return<\/span> sum \/ validValues.<span class=\"synStatement\">length<\/span>;\n    <span class=\"synIdentifier\">}<\/span>);\n    <span class=\"synIdentifier\">const<\/span> filled = value.<span class=\"synStatement\">map<\/span>(<span class=\"synPreProc\">row<\/span> <span class=\"synType\">=&gt;<\/span>\n      row.<span class=\"synStatement\">map<\/span>((<span class=\"synPreProc\">v<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> i<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synType\">Number<\/span>.<span class=\"synStatement\">isNaN<\/span>(v) ? colMeans[i] : v)\n    );\n    <span class=\"synStatement\">return<\/span> next(<span class=\"synIdentifier\">{<\/span> <span class=\"synStatement\">value<\/span>: filled, <span class=\"synStatement\">label <\/span><span class=\"synIdentifier\">}<\/span>);\n  <span class=\"synIdentifier\">}<\/span> <span class=\"synSpecial\">catch<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synSpecial\">throw<\/span> <span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Error<\/span>(<span class=\"synConstant\">\"Error in handleMissing\"<\/span>);\n  <span class=\"synIdentifier\">}<\/span>\n<span class=\"synIdentifier\">}<\/span>;\n\n<span class=\"synIdentifier\">const<\/span> handleScaling: <span class=\"synIdentifier\">Processor<\/span> = (<span class=\"synPreProc\">{ value<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> label }<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> next<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n  <span class=\"synStatement\">if<\/span> (!(value &amp;&amp; label)) <span class=\"synSpecial\">throw<\/span> <span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Error<\/span>(<span class=\"synConstant\">\"Invalid data in scale\"<\/span>);\n  <span class=\"synSpecial\">try<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synIdentifier\">const<\/span> min = value[<span class=\"synConstant\">0<\/span>].map((<span class=\"synPreProc\">_<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> col<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n      <span class=\"synIdentifier\">const<\/span> colValues = value.<span class=\"synStatement\">map<\/span>(<span class=\"synPreProc\">row<\/span> <span class=\"synType\">=&gt;<\/span> row[col]).<span class=\"synStatement\">filter<\/span>(<span class=\"synPreProc\">v<\/span> <span class=\"synType\">=&gt;<\/span> !<span class=\"synType\">Number<\/span>.<span class=\"synStatement\">isNaN<\/span>(v));\n      <span class=\"synStatement\">return<\/span> <span class=\"synType\">Math<\/span>.<span class=\"synStatement\">min<\/span>(...colValues);\n    <span class=\"synIdentifier\">}<\/span>);\n    <span class=\"synIdentifier\">const<\/span> max = value[<span class=\"synConstant\">0<\/span>].map((<span class=\"synPreProc\">_<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> col<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n      <span class=\"synIdentifier\">const<\/span> colValues = value.<span class=\"synStatement\">map<\/span>(<span class=\"synPreProc\">row<\/span> <span class=\"synType\">=&gt;<\/span> row[col]).<span class=\"synStatement\">filter<\/span>(<span class=\"synPreProc\">v<\/span> <span class=\"synType\">=&gt;<\/span> !<span class=\"synType\">Number<\/span>.<span class=\"synStatement\">isNaN<\/span>(v));\n      <span class=\"synStatement\">return<\/span> <span class=\"synType\">Math<\/span>.<span class=\"synStatement\">max<\/span>(...colValues);\n    <span class=\"synIdentifier\">}<\/span>);\n    <span class=\"synIdentifier\">const<\/span> scaled = value.<span class=\"synStatement\">map<\/span>(<span class=\"synPreProc\">row<\/span> <span class=\"synType\">=&gt;<\/span>\n      row.<span class=\"synStatement\">map<\/span>((<span class=\"synPreProc\">v<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> i<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n        <span class=\"synStatement\">if<\/span> (<span class=\"synType\">Number<\/span>.<span class=\"synStatement\">isNaN<\/span>(v)) <span class=\"synStatement\">return<\/span> <span class=\"synConstant\">0<\/span>;\n        <span class=\"synIdentifier\">const<\/span> range = max[i] - min[i];\n        <span class=\"synStatement\">if<\/span> (range === <span class=\"synConstant\">0<\/span>) <span class=\"synStatement\">return<\/span> <span class=\"synConstant\">0<\/span>;\n        <span class=\"synStatement\">return<\/span> (v - min[i]) \/ range;\n      <span class=\"synIdentifier\">}<\/span>)\n    );\n    <span class=\"synStatement\">return<\/span> next(<span class=\"synIdentifier\">{<\/span> <span class=\"synStatement\">value<\/span>: scaled, <span class=\"synStatement\">label <\/span><span class=\"synIdentifier\">}<\/span>);\n  <span class=\"synIdentifier\">}<\/span> <span class=\"synSpecial\">catch<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synSpecial\">throw<\/span> <span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Error<\/span>(<span class=\"synConstant\">\"Error in scale\"<\/span>);\n  <span class=\"synIdentifier\">}<\/span>\n<span class=\"synIdentifier\">}<\/span>;\n\n<span class=\"synIdentifier\">const<\/span> handleEncodeLabels: <span class=\"synIdentifier\">Processor<\/span> = (<span class=\"synPreProc\">{ value<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> label }<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> next<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n  <span class=\"synStatement\">if<\/span> (!(value &amp;&amp; label)) <span class=\"synSpecial\">throw<\/span> <span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Error<\/span>(<span class=\"synConstant\">\"Invalid data in encodeLabels\"<\/span>);\n  <span class=\"synSpecial\">try<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synIdentifier\">const<\/span> classes = <span class=\"synType\">Array<\/span>.<span class=\"synStatement\">from<\/span>(<span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Set<\/span>(label));\n    <span class=\"synIdentifier\">const<\/span> encoded = label.<span class=\"synStatement\">map<\/span>(<span class=\"synPreProc\">label<\/span> <span class=\"synType\">=&gt;<\/span> classes.<span class=\"synStatement\">indexOf<\/span>(label).<span class=\"synStatement\">toString<\/span>());\n    <span class=\"synStatement\">return<\/span> next(<span class=\"synIdentifier\">{<\/span> <span class=\"synStatement\">value<\/span>, <span class=\"synStatement\">label<\/span>: encoded <span class=\"synIdentifier\">}<\/span>);\n  <span class=\"synIdentifier\">}<\/span> <span class=\"synSpecial\">catch<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synSpecial\">throw<\/span> <span class=\"synIdentifier\">new<\/span> <span class=\"synType\">Error<\/span>(<span class=\"synConstant\">\"Error in encodeLabels\"<\/span>);\n  <span class=\"synIdentifier\">}<\/span>\n<span class=\"synIdentifier\">}<\/span>;\n\n<span class=\"synIdentifier\">const<\/span> valueArray = <span class=\"synIdentifier\">[<\/span>\n  <span class=\"synIdentifier\">[<\/span><span class=\"synConstant\">5.1<\/span>, <span class=\"synConstant\">3.5<\/span>, <span class=\"synConstant\">1.4<\/span>, <span class=\"synConstant\">0.2<\/span><span class=\"synIdentifier\">]<\/span>,\n  <span class=\"synIdentifier\">[<\/span><span class=\"synConstant\">4.9<\/span>, NaN, <span class=\"synConstant\">1.4<\/span>, <span class=\"synConstant\">0.2<\/span><span class=\"synIdentifier\">]<\/span>,\n  <span class=\"synIdentifier\">[<\/span><span class=\"synConstant\">7.0<\/span>, <span class=\"synConstant\">3.2<\/span>, <span class=\"synConstant\">4.7<\/span>, NaN<span class=\"synIdentifier\">]<\/span>\n<span class=\"synIdentifier\">]<\/span>;\n<span class=\"synIdentifier\">const<\/span> labelArray = <span class=\"synIdentifier\">[<\/span><span class=\"synConstant\">\"setosa\"<\/span>, <span class=\"synConstant\">\"virginica\"<\/span>, <span class=\"synConstant\">\"versicolor\"<\/span><span class=\"synIdentifier\">]<\/span>;\n\n<span class=\"synIdentifier\">const<\/span> chainArray = <span class=\"synIdentifier\">[<\/span>\n  handleMissing,\n  handleScaling,\n  handleEncodeLabels\n<span class=\"synIdentifier\">]<\/span>;\n\n\n<span class=\"synIdentifier\">const<\/span> dispatch = (<span class=\"synPreProc\">value<\/span>:<span class=\"synPreProc\"> <\/span><span class=\"synIdentifier\">Data<\/span><span class=\"synStatement\">,<\/span><span class=\"synPreProc\"> i<\/span>:<span class=\"synPreProc\"> <\/span><span class=\"synType\">number<\/span>):<span class=\"synPreProc\"> <\/span><span class=\"synIdentifier\">Data<\/span><span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n  <span class=\"synStatement\">if<\/span> (i &gt;= chainArray.<span class=\"synStatement\">length<\/span>) <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synStatement\">return<\/span> value;\n  <span class=\"synIdentifier\">}<\/span>\n  <span class=\"synIdentifier\">const<\/span> response = chainArray[i];\n  <span class=\"synStatement\">return<\/span> response(value, (<span class=\"synPreProc\">v<\/span>)<span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> dispatch(v, i + <span class=\"synConstant\">1<\/span>));\n<span class=\"synIdentifier\">}<\/span>\n\n<span class=\"synIdentifier\">const<\/span> preprocessChain = (<span class=\"synPreProc\">value<\/span>:<span class=\"synPreProc\"> <\/span><span class=\"synIdentifier\">Data<\/span>):<span class=\"synPreProc\"> <\/span><span class=\"synIdentifier\">Data<\/span><span class=\"synPreProc\"> <\/span><span class=\"synStatement\">|<\/span><span class=\"synPreProc\"> <\/span><span class=\"synType\">undefined<\/span><span class=\"synPreProc\"> <\/span><span class=\"synType\">=&gt;<\/span> <span class=\"synIdentifier\">{<\/span>\n  <span class=\"synSpecial\">try<\/span> <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synStatement\">return<\/span> dispatch(value, <span class=\"synConstant\">0<\/span>);\n  <span class=\"synIdentifier\">}<\/span> <span class=\"synSpecial\">catch<\/span> (error) <span class=\"synIdentifier\">{<\/span>\n    <span class=\"synType\">console<\/span>.error(<span class=\"synConstant\">\"Error in preprocessChain:\"<\/span>, error);\n    <span class=\"synStatement\">return<\/span> <span class=\"synConstant\">undefined<\/span>;\n  <span class=\"synIdentifier\">}<\/span>\n<span class=\"synIdentifier\">}<\/span>\n<span class=\"synIdentifier\">const<\/span> result = preprocessChain(<span class=\"synIdentifier\">{<\/span> <span class=\"synStatement\">value<\/span>: valueArray, <span class=\"synStatement\">label<\/span>: labelArray <span class=\"synIdentifier\">}<\/span>);\n<span class=\"synType\">console<\/span>.<span class=\"synStatement\">log<\/span>(result);\n<\/pre>\n<\/div>\n<p>\u3053\u306e\u5b9f\u88c5\u306b\u3088\u3063\u3066\u3001\u65b0\u305f\u306a\u51e6\u7406\u3092\u8ffd\u52a0\u3057\u305f\u3044\u5834\u5408\u3067\u3082\u7c21\u5358\u306b\u62e1\u5f35\u3067\u304d\u307e\u3059\u3002<br \/>\n\u307e\u305f\u3001\u51e6\u7406\u304c\u8907\u96d1\u306b\u306a\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u5404\u51e6\u7406\u304c\u72ec\u7acb\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30d0\u30b0\u306e\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3084\u3059\u304f\u306a\u308b\u3053\u3068\u3084\u3001\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u304c\u66f8\u304d\u3084\u3059\u3044\u3068\u3044\u3046\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u7686\u3055\u3093\u3082\u305c\u3072\u3001\u81ea\u5206\u306a\u308a\u306e\u51e6\u7406\u3092\u8ffd\u52a0\u3057\u3066\u5171\u6709\u3057\u3066\u3044\u305f\u3060\u3051\u308b\u3068\u3046\u308c\u3057\u3044\u3067\u3059\uff01<\/p>\n<p><iframe 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