Legacy Anchor IDL initialization error
Solana Explorer, a popular platform for accessing and managing anchor blockchains, is experiencing issues initializing legacy IDL within the TypeScript SDK. One specific error reported is a “Not an undefined object (evaluating ‘s.split’)” message.
The issue arises when trying to convert the domain name ‘explorer.solana.com’ to camel case, which is required by some older IDLs. The issue is in the way TypeScript handles the ‘split()’ string method in certain cases.
The issue is:
When converting the domain name to camel case, TypeScript tries to use the split() method with an empty string as its separator. However, when explorer.solana.com is not a valid string (i.e. it has no spaces), s.split() returns an array containing only one element: the entire input string. In this case, defined is returned instead of an object.
Solution:
To solve this problem, you can use another approach to convert the domain name to camelcase. One way to do this is to use regular expressions (regex) in your TypeScript code.
Here is an updated example that uses regex to achieve the desired result:
;import ts from 'typescript';
// Assuming we have the following IDL:
const explorerIdl =
// This is an IDL anchor example.
// It should be converted to camel case like this: "explorer.solana.com" -> "exPlOrer.solAnA.com"
function convertToCamelCase(idl: string): string {
const parser = ts.createParser(idl);
const sourceFile = ts.createSourceFile('idl.ts', idl, ts.ScriptTarget.ES2015);
camelCaseIdl = '';
for (const parser token.getTokens(sourceFile)) {
if (ts.isIdentifier(token) && !token.value.startsWith('_')) {
camelCaseIdl += token.name;
} else if (ts.isStringLiteral(token)) {
const regex = new RegExp(
${token.value.replace(/([A-Z]))|([a-z])/g, '$1$1')}, 'u');let match: RegExpExecArray | null;
while ((match = regex.exec(token.value)) !== null) {
camelCaseIdl += match[0][0].toLowerCase();
}
} else if (ts.isExpressionStatement(token)) {
camelCaseIdl += convertToCamelCase(token.expression);
}
}
return CamelCaseIdl;
}
console.log(convertToCamelCase(explorerIdl));
In this updated example, the ‘convertToCamelCase()’ function uses a regex to check whether each token in the IDL is an identifier or a string. If it is an identifier, it simply appends its name to the CamelCase IDL string. If it is a literal string, it converts the string using that regex and then appends its first letter (in uppercase) to the CamelCase IDL string.
Conclusion:
The problem with the original code can be solved by using regular expressions in TypeScript to convert the domain name to CamelCase. This approach ensures that the correct objects are returned, eliminating the “not an unspecified object” error.