{"data":{"metadata":{"platform":"senf.in","chain":"a","seqNo":10,"timestamp":"2026-05-24T12:12:27Z","type":"user/post","payment":{"amount":1,"unit":"min"},"location":"https://www.rfc-editor.org/rfc/rfc8785#name-ecmascript-sample-canonical","previousCi":"907d9d6e5c8fe21d35393de6e8ade0d5eadf7eb323155b5fa4bc405487b0558a"},"content":{"data":"@https://www.rfc-editor.org/rfc/rfc8785#name-ecmascript-sample-canonical\nsenf.in 2026-05-24T12:11:17Z 1min\nThere is a bug in the ECMAScript Sample Canonicalizer. Properties of objects \nwith their own §` toJSON§` implementation will not be sorted.\n\n§<javascript\nclass MyClass {\n    constructor(a,b) {\n        this.a = a\n        this.b = b\n        this.c = \"constant\"\n    }\n\n    toJSON() {\n        return {\n            \"3a\": this.a,\n            \"2b\": this.b,\n            \"1c\": this.c\n        }\n    }\n}\n\nvar x = new MyClass(\"a value\",\"b value\")\nconsole.log(canonicalize(x))           \n//output:   {\"3a\":\"a value\",\"2b\":\"b value\",\"1c\":\"constant\"}\n//expected: {\"1c\":\"constant\",\"2b\":\"b value\",\"3a\":\"a value\"}\n§>\n\nTo fix it replace \n\n§<javascript\n/////////////////////////////////////////////////\n// Primitive type or toJSON, use \"JSON\"        //\n/////////////////////////////////////////////////\nbuffer += JSON.stringify(object);\n§>\n\nwith \n\n§<javascript\n/////////////////////////////////////////////////\n// Primitive type or toJSON, use \"JSON\"        //\n/////////////////////////////////////////////////\nbuffer += object.toJSON != null \n    ? canonicalize(object.toJSON()) \n    : JSON.stringify(object);\n§>","signatures":[]}},"signatures":[{"signature":"JmzBGcgXhOs/UDVs1wJOku/rvaLEw60mOMD8tCPGr4VXyp1bgO2N0+tVBjxAiRjnOYZCBc395pqAXMeEq77xCg==","keyId":"8MKcAXiCKzwbthlZl5OAGkb8edlIsQ3t7leVsjO_a0A"}]}
{"data":{"metadata":{"platform":"senf.in","chain":"a","seqNo":11,"timestamp":"2026-05-24T12:13:28Z","type":"user/post","payment":{"amount":1,"unit":"min"},"location":"https://peggyjs.org/documentation.html#grammar-syntax-and-semantics","previousCi":"8ab38a94fcee592e998de08d0e2a935190093dbda8e05c62c2fa8894636f3859"},"content":{"data":"@https://peggyjs.org/documentation.html#grammar-syntax-and-semantics\nsenf.in 2026-05-24T12:12:17Z 1min\nThe parser generated by Peggy for a context-free grammar §$G§$ does not\nnecessarily recognize §$ L(G)§$ as one might expect. For example:\n§<javascript\nS = X \"b\" //does not match \"aab\"\nX = \"a\" / \"aa\"\n§>\n\nThere seems to be no backtracking for a sequence of expressions, i.e.\nfor a rule §` X = Y Z§` the parser consumes the first match for §` Y§`\nand if the rest of the input does not match §` Z§` it fails to match\n§` X§` instead of trying to see if there is an alternative match for\n§` Y§`.\n\nIf the problematic rule is just an alternative of terminals as above\nit suffices to sort them in descending order:\n§<javascript\nS = X \"b\" //matches \"aab\"\nX = \"aa\" / \"a\"\n§>\n\nThis ensures that no terminal in §` X§` is a prefix of any terminal\nthat comes after it thereby eliminating the need for backtracking.","signatures":[]}},"signatures":[{"signature":"VQMIZcSA90D2VeYjFq8SF/6dJg1203CDyoExNusY5xzeOnxj9q6hFyv/wNTbL8o8eWsv6CuPpGyMvhLbq6/NCg==","keyId":"8MKcAXiCKzwbthlZl5OAGkb8edlIsQ3t7leVsjO_a0A"}]}
{"data":{"metadata":{"platform":"senf.in","chain":"a","seqNo":12,"timestamp":"2026-05-24T12:14:29Z","type":"user/post","payment":{"amount":1,"unit":"min"},"location":"https://developer.mozilla.org/en-US/docs/Web/API/Streams_API/Using_readable_streams","previousCi":"a7177ffa563b632893de88131945502881ba4d157e1c1cb7f20502042336cb83"},"content":{"data":"@https://developer.mozilla.org/en-US/docs/Web/API/Streams_API/Using_readable_streams\nsenf.in 2026-05-24T12:13:17Z 1min\nHere's an example of how to construct a §`javascript ReadableStream§` from an async generator function that yields byte arrays.\n\n§<javascript\nfunction asyncGeneratorToStream(gen) {\n    return new ReadableStream({\n        pull: async (controller) => {\n            const res = await gen.next()\n            if (res.done) controller.close()\n            controller.enqueue(res.value)\n        },\n        type: \"bytes\"\n    })\n}\n\nasync function* exampleGenerator(arr) {\n    const te = new TextEncoder()\n    for(const el of arr) {\n        yield te.encode(el)\n    }\n}\n\nconst rs = asyncGeneratorToStream(exampleGenerator([\"line1\",\"line2\"]))\n§>","signatures":[]}},"signatures":[{"signature":"M5nr/dpXt70RTwPO/ZWmfKlrMEIEuK5KIBFX+0ViNUHGRPFroNKA62DepBFmF9xqpopq8qBdN5dbjqVxq0RrDQ==","keyId":"8MKcAXiCKzwbthlZl5OAGkb8edlIsQ3t7leVsjO_a0A"}]}