Chord Transposer

\n \n

just enter space-separated valid chords (case insensitive) and the number of half-steps to transpose by (-11 – 11). it does not accept flat chords at the moment so you have to convert it to sharp chords first, sorry.\n\n

sometimes i just want to enter four chords and transpose it but have found no tools that simply does this so i made it myself.\n\n

i forgot how to make this the easy way using HTML and vanilla JavaScript so i did it the hard way using Hono server and everything.\n

",[],[179],{"_104":187,"_96":188,"_158":189,"_160":-5,"_161":144,"_162":190,"_164":165,"_106":191,"_101":192,"_168":193,"_170":194,"_172":22,"_173":195,"_174":196,"_99":197},"deddc2dc-f7dc-11f0-8287-42dde27851f2","main.ts","02ad4354-e6f3-11f0-8c0a-42dde27851f2",76,["D",1769118845234],35,"http","import { Hono } from \"https://esm.sh/hono@4\";\nimport { serveFile } from \"https://esm.town/v/std/utils/index.ts\";\n\nconst app = new Hono();\n\napp.get(\"/\", async () => await serveFile(\"index.html\"));\napp.post(\"/\", async (c) => {\n const { chords, transposeby }: { chords: string; transposeby: string } =\n await c\n .req.parseBody({ all: true });\n\n console.log(typeof chords, chords, typeof transposeby, transposeby);\n const chordArr = chords.split(\" \");\n const majorChordArr = getMajorChords(chordArr);\n const transposedChordsArr: MajorChord[] = majorChordArr.map((\n chord: MajorChord,\n ) => transpose(chord, parseInt(transposeby)));\n const chordTypesArr = getChordTypes(chordArr);\n const completeTransposedChordsArr = rejoinTransposedChords(\n transposedChordsArr,\n chordTypesArr,\n );\n console.log(chordArr, transposedChordsArr);\n return c.html(`\n \n \n \n \n \n \n Transposed\n

Your transposed chords: ${completeTransposedChordsArr.join(\" \")}\n `);\n});\napp.get(\"/robots.txt\", async () => await serveFile(\"robots.txt\"));\n\ntype MajorChord =\n | \"C\"\n | \"C#\"\n | \"D\"\n | \"D#\"\n | \"E\"\n | \"F\"\n | \"F#\"\n | \"G\"\n | \"G#\"\n | \"A\"\n | \"A#\"\n | \"B\";\n\nconst majorChords: MajorChord[] = [\n \"C\",\n \"C#\",\n \"D\",\n \"D#\",\n \"E\",\n \"F\",\n \"F#\",\n \"G\",\n \"G#\",\n \"A\",\n \"A#\",\n \"B\",\n];\n\nfunction getMajorChords(arr: string[]): string[] {\n const majorChords = arr.map((str) => {\n if (str.includes(\"#\")) {\n return str.slice(0, 2).toUpperCase();\n } else {\n return str.slice(0, 1).toUpperCase();\n }\n });\n\n return majorChords;\n}\n\nfunction getChordTypes(arr: string[]): string[] {\n const chordTypes = arr.map((str) => {\n if (str.includes(\"#\")) {\n return str.slice(2);\n } else {\n return str.slice(1);\n }\n });\n\n return chordTypes;\n}\n\nfunction transpose(chord: MajorChord, num: number) {\n const index = majorChords.findIndex((validChord) => chord === validChord);\n let transposedIndex = index + num;\n\n if (transposedIndex > 11) {\n transposedIndex -= 12;\n } else if (transposedIndex < 0) {\n transposedIndex += 12;\n }\n\n return majorChords[transposedIndex];\n}\n\nfunction rejoinTransposedChords(\n majorChords: MajorChord[],\n chordTypes: string[],\n) {\n return (\n majorChords.map((chord: string, index: number) => {\n return chord + chordTypes[index];\n })\n );\n}\n\nexport default app.fetch;","chordtransposer",[],[188],{"_104":199,"_96":200,"_158":201,"_160":-5,"_161":144,"_162":202,"_164":165,"_106":203,"_101":204,"_168":169,"_170":205,"_172":22,"_173":-5,"_174":206,"_99":207},"4b56b7ee-f755-11f0-8153-42dde27851f2","robots.txt","3e7ffb0c-f755-11f0-98be-42dde27851f2",52,["D",1769060615663],3,"User-agent: *\nDisallow: /",[],[200],"files",[156,177,186,198],"counts",{"_212":32,"_213":214,"_215":32,"_216":217,"_220":221},"pulls","branches",2,"forks","envVars",{"_218":32,"_219":32},"count","emptyCount","connections",{"_218":32,"_222":32},"unfilledCount","contents",[],{"_104":157,"_161":144,"_158":159,"_96":100,"_170":171,"_168":169,"_101":167,"_160":-5,"_106":226,"_162":163,"_173":-5,"_99":227},["D",1769118949378],[100],"upstreamProject","upstreamBranch","emptyEnvVars","isNew","flags",[],"routes/_app.x.$handle.$name.branch.$branch.history_.$",{"_94":95,"_96":97,"_98":44,"_99":100,"_102":236,"_169":241,"_244":245,"_286":287,"_297":-7,"_298":32,"_299":22},{"_104":105,"_96":97,"_106":237,"_108":-5,"_109":22,"_110":111,"_112":113,"_114":-5,"_14":115,"_116":-5,"_117":22,"_118":-5,"_119":-5,"_120":32,"_16":121,"_122":-5,"_123":-5,"_124":125,"_126":125,"_127":128,"_129":128,"_130":128,"_131":125,"_132":125,"_23":238,"_136":239,"_141":240,"_153":22},["D",1767259184468],{"_94":95,"_134":135},{"_94":95,"_138":135,"_14":115,"_139":140},{"_101":143,"_96":44,"_104":144,"_145":105,"_146":-5,"_147":-5,"_148":-5,"_149":-5,"_150":-5,"_151":97,"_152":95},{"_104":157,"_96":100,"_158":159,"_160":-5,"_161":144,"_162":163,"_164":165,"_106":242,"_101":167,"_168":169,"_170":171,"_172":22,"_173":-5,"_99":243},["D",1769118949378],[100],"history",[246,248,254,260,266,271,276,281],{"_104":157,"_161":144,"_158":159,"_96":100,"_170":171,"_168":169,"_101":167,"_160":-5,"_106":247,"_162":163,"_173":-5},["D",1769118949378],{"_104":249,"_161":144,"_158":159,"_96":100,"_170":250,"_168":169,"_101":251,"_160":-5,"_106":252,"_162":253,"_173":-5},"1146be96-f7a5-11f0-84ae-42dde27851f2","# chordTransposer\n\nhttps://chordtransposer.val.run\n\njust enter space-separated valid chords (case insensitive) and the number of\nhalf-steps to transpose by (-11 – 11). it does not accept flat chords at the\nmoment so you have to convert it to sharp chords first, sorry.\n\nsometimes i just want to enter four chords and transpose it but have found no\ntools that simply does this so i made it myself.\n\ni forgot how to make this the easy way using HTML and vanilla JavaScript so i\ndid it the hard way using Hono server and everything.",6,["D",1769094877984],62,{"_104":255,"_161":144,"_158":159,"_96":100,"_170":256,"_168":169,"_101":257,"_160":-5,"_106":258,"_162":259,"_173":-5},"06145a16-f78b-11f0-9f95-42dde27851f2","# chordTransposer\n\nhttps://chordtransposer.val.run\n\njust enter space-separated valid chords (case insensitive) and the number of half-steps to transpose by (-11 – 11). it does not accept flat chords at the moment so you have to convert it to sharp chords first, sorry.\n\nsometimes i just want to enter four chords and transpose it but have found no tools that simply does this so i made it myself.\n\ni forgot how to do it the easy way using HTML and vanilla JavaScript so i did it the hard way using Hono server and everything.",5,["D",1769083692241],54,{"_104":261,"_161":144,"_158":159,"_96":100,"_170":262,"_168":169,"_101":263,"_160":-5,"_106":264,"_162":265,"_173":-5},"5801e436-f751-11f0-bdcb-42dde27851f2","# chordTransposer\n\nhttps://chordtransposer.val.run\n\njust enter space-separated valid chords (case insensitive) and the number of half-steps to transpose by (-11 – 11). it does not accept flat chords at the moment so you have to convert it to sharp chords first, sorry.\n\ni forgot how to do it the easy way using HTML and vanilla JavaScript so i did it the hard way using Hono server and everything.",4,["D",1769058918931],48,{"_104":267,"_161":144,"_158":159,"_96":100,"_170":268,"_168":169,"_101":204,"_160":-5,"_106":269,"_162":270,"_173":-5},"488c93f4-f74f-11f0-b523-42dde27851f2","# chordTransposer\n\njust enter space-separated valid chords (case insensitive) and the number of half-steps to transpose by (-11 – 11). it does not accept flat chords at the moment so you have to convert it to sharp chords first, sorry.\n\ni forgot how to do it the easy way using HTML and vanilla JavaScript so I did it the hard way using Hono server and everything.",["D",1769058034002],47,{"_104":272,"_161":144,"_158":159,"_96":100,"_170":273,"_168":169,"_101":214,"_160":-5,"_106":274,"_162":275,"_173":-5},"ca888756-f74e-11f0-9b13-42dde27851f2","# chordTransposer\n\njust enter space-separated valid chords (case insensitive) and the number of half-steps to transpose by.\n\ni forgot how to do it the easy way using HTML and vanilla JavaScript so I did it the hard way using Hono server and everything.",["D",1769057822583],45,{"_104":277,"_161":144,"_158":159,"_96":100,"_170":273,"_168":169,"_101":278,"_160":-5,"_106":279,"_162":280,"_173":-5},"c2e651ea-f74e-11f0-b128-42dde27851f2",1,["D",1769057809770],44,{"_104":282,"_161":144,"_158":159,"_96":100,"_170":283,"_168":169,"_101":32,"_160":-5,"_106":284,"_162":285,"_173":-5},"3be47528-f74e-11f0-a012-42dde27851f2","# chordTransposer",["D",1769057583268],43,"versions",[288,290,291,292,293,294,295,296],{"_169":246,"_289":248},"previous",{"_169":248,"_289":254},{"_169":254,"_289":260},{"_169":260,"_289":266},{"_169":266,"_289":271},{"_169":271,"_289":276},{"_169":276,"_289":281},{"_169":281,"_289":-5},"versionNumber","page","hasNext","actionData","errors"]

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chordTransposer

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