Function getTransformers

src/transpilation/transformers.ts:8–43

(
    program: ts.Program,
    diagnostics: ts.Diagnostic[],
    customTransformers: ts.CustomTransformers,
    onSourceFile: (sourceFile: ts.SourceFile) => void
)

import { getConfigDirectory, resolvePlugin } from "./utils";

export function getTransformers(
    program: ts.Program,
    diagnostics: ts.Diagnostic[],
    customTransformers: ts.CustomTransformers,
    onSourceFile: (sourceFile: ts.SourceFile) => void
): ts.CustomTransformers {
    const luaTransformer: ts.TransformerFactory<ts.SourceFile> = () => sourceFile => {
        onSourceFile(sourceFile);
        return ts.createSourceFile(sourceFile.fileName, "", ts.ScriptTarget.ESNext);
    };

    const transformersFromOptions = loadTransformersFromOptions(program, diagnostics);

    const afterDeclarations = [
        ...(transformersFromOptions.afterDeclarations ?? []),
        ...(customTransformers.afterDeclarations ?? []),
    ];

    const options = program.getCompilerOptions() as CompilerOptions;
    if (options.noImplicitSelf) {
        afterDeclarations.unshift(noImplicitSelfTransformer);
    }

    return {
        afterDeclarations,
        before: [
            ...(customTransformers.before ?? []),
            ...(transformersFromOptions.before ?? []),

            ...(transformersFromOptions.after ?? []),
            ...(customTransformers.after ?? []),
            stripParenthesisExpressionsTransformer,
            luaTransformer,
        ],
    };
}

export const noImplicitSelfTransformer: ts.TransformerFactory<ts.SourceFile | ts.Bundle> = () => node => {
    const transformSourceFile: ts.Transformer<ts.SourceFile> = node => {