function msi()

in wix/msi.js [57:115]
44 lines of code
8 McCabe index (conditional complexity)

function msi(config, buildTarget, buildInfos, packageJson) {
    const log = require("cookie.gulp/log");
    const { PassThrough } = require("stream");
    
    if (process.platform !== "win32") {
        log.warning("MSI", "Target", "Skipping: Publishing MSI must be on win32.");
        return new PassThrough({ objectMode: true });
    }

    if (buildTarget.platform !== "win32") {
        log.error("MSI", "Target", "Skipping: BuildTarget.platform must be win32.");
        return new PassThrough({ objectMode: true });
    }

    if (buildTarget.arch !== "x32"
        && buildTarget.arch !== "x64") {
        log.error("MSI", "Target", "Skpping: BuildTarget.arch must be x32 or x64.");
    }

    config.variables = config.variables || Object.create(null);

    if (!config.variables[VarName_MsiVersion]) {
        config.variables[VarName_MsiVersion] = generateMsiVersion(buildInfos);
        log.info("MSI", "Variable", `${VarName_MsiVersion}="${config.variables[VarName_MsiVersion]}"`);
    }

    const gulp = require("gulp");
    const globUtils = require("cookie.gulp/glob-utils");
    const { chain } = require("cookie.gulp/steams-utils");
    const light = require("./light");
    const candle = require("./candle");
    const heat = require("./heat");

    return chain(
        heat({
            intermediateDir: buildInfos.paths.intermediateDir,
            autoGenerateComponentGuids: config.autoGenerateComponentGuids,
            generateGuidsNow: config.generateGuidsNow,
            keepEmptyFolders: config.keepEmptyFolders,
            rootDirectory: config.rootDirectory,
            componentGroupName: config.componentGroupName,
            xsltTemplatePath: config.xsltTemplatePath
        }),

        gulp.src(config.wxs ? globUtils.toGlobs(config.wxs, "wxs") : "**/*.wxs", { dot: true }),

        // @ts-ignore
        candle({
            intermediateDir: buildInfos.paths.intermediateDir,
            arch: toMsiArch(buildTarget.arch),
            variables: config.variables
        }),

        light({
            intermediateDir: buildInfos.paths.intermediateDir,
            spdb: config.spdb,
            outFileName: `setup-${config.variables[VarName_MsiVersion]}.${buildTarget.arch}.msi`
        }));
};