How can you transform an object literal AST from a TypeScript file into executable code?

Is there a way to convert a JSON or Object Literal file into executable code?

const astInJson = {"pos":0,"end":79,"flags":0,"kind":268,"text":"export interface Order {\n\torderId: string;\n\titineraries(id: string): string;\n}\n","bindDiagnostics":[],"languageVersion":5,"fileName":"/Users/myth/Desktop/test-interface.ts","languageVariant":0,"isDeclarationFile":false,"scriptKind":3,"referencedFiles":[],"typeReferenceDirectives":[],"amdDependencies":[],"statements":[{"pos":0,"end":78,"flags":0,"kind":230,"modifiers":[{"pos":0,"end":6,"flags":0,"kind":84}],"name":{"pos":16,"end":22,"flags":0,"escapedText":"Order"},"members":[{"pos":24,"end":42,"flags":0,"kind":148,"name":{"pos":24,"end":33,"flags":0,"escapedText":"orderId"},"type":{"pos":34,"end":41,"flags":0,"kind":136}},{"pos":42,"end":76,"flags":0,"kind":150,"name":{"pos":42,"end":55,"flags":0,"escapedText":"itineraries"},"parameters":[{"pos":56,"end":66,"flags":0,"kind":146,"name":{"pos":56,"end":58,"flags":0,"escapedText":"id"},"type":{"pos":59,"end":66,"flags":0,"kind":136}}],"type":{"pos":68,"end":75,"flags":0,"kind":136}}],"modifierFlagsCache":536870913}],"endOfFileToken":{"pos":78,"end":79,"flags":0,"kind":1},"externalModuleIndicator":{"pos":0,"end":78,"flags":0,"kind":230,"modifiers":[{"pos":0,"end":6,"flags":0,"kind":84}],"name":{"pos":16,"end":22,"flags":0,"escapedText":"Order"},"members":[{"pos":24,"end":42,"flags":0,"kind":148,"name":{"pos":24,"end":33,"flags":0,"escapedText":"orderId"},"type":{"pos":34,"end":41,"flags":0,"kind":136}},{"pos":42,"end":76,"flags":0,"kind":150,"name":{"pos":42,"end":55,"flags":0,"escapedText":"itineraries"},"parameters":[{"pos":56,"end":66,"flags":0,"kind":146,"name":{"pos":56,"end":58,"flags":0,"escapedText":"id"},"type":{"pos":59,"end":66,"flags":0,"kind":136}}],"type":{"pos":68,"end":75,"flags":0,"kind":136}}],"modifierFlagsCache":536870913},"nodeCount":15,"identifierCount":5,"identifiers":{},"parseDiagnostics":[]}

typescriptbabeljsabstract-syntax-treebabylonjstranspiler

Answer №1

If you possess a ts.SourceFile object, you have the option to utilize:

ts.createPrinter().printFile(file)

This method will output a string. However, keep in mind that ts.SourceFile is a complex data structure with cyclic references; hence, converting a subset of its fields from JSON back to a ts.SourceFile may not be straightforward. For additional insights, you can explore the API recommended for modifying and printing ASTs within TypeScript's code fixes implementation.

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