Function requireOverride

src/transpilation/bundle.ts:15–43

(options: CompilerOptions)

// Override `require` to read from ____modules table.
function requireOverride(options: CompilerOptions) {
    const runModule =
        options.luaTarget === LuaTarget.Lua50
            ? "if (table.getn(arg) > 0) then value = module(unpack(arg)) else value = module(file) end"
            : 'if (select("#", ...) > 0) then value = module(...) else value = module(file) end';
    return `
local ____modules = {}
local ____moduleCache = {}
local ____originalRequire = require
local function require(file, ...)
    if ____moduleCache[file] then
        return ____moduleCache[file].value
    end
    if ____modules[file] then
        local module = ____modules[file]
        local value = nil
        ${runModule}
        ____moduleCache[file] = { value = value }
        return value
    else
        if ____originalRequire then
            return ____originalRequire(file)
        else
            error("module '" .. file .. "' not found")
        end
    end
end
`;
}

export const sourceMapTracebackBundlePlaceholder = "{#SourceMapTracebackBundle}";