insomnia-plugin-global-headers/global-headers.js

Set up your global http headers in one place and this plugin will take care of setting it for each requests. This plugin won't override any headers you set on the request.

async function setHeaders(context) {
    const isExcluded = await context.store.hasItem(`excluded.${context.request.getId()}`);
    console.log(isExcluded);
    if (isExcluded) {
        console.log("[global-headers]: Skipping... request is excluded");
        return false;
    }

    const globalHeaders = await context.request.getEnvironmentVariable("GLOBAL_HEADERS");
    if (!globalHeaders) {
        console.log("[global-headers]: Skipping... no [GLOBAL_HEADERS] present in environment");
        return;
    }

    for (const headerName of Object.keys(globalHeaders)) {
        const headerValue = globalHeaders[headerName];

        if (await context.request.hasHeader(headerName)) {
            console.log("[global-headers]: Skipping... header already set");
            continue;
        }

        await context.request.setHeader(headerName, headerValue);
    }
    console.log("[global-headers]: Set headers");
}

const exclueRequest = {
    label: 'Disable global headers',
    action: async (context, data) => {
        const { request } = data;
        context.store.setItem(`excluded.${request._id}`, "true");
    },
};

const excludeRequestGroup = {
    label: "Disable global headers",
    action: async (context, data) => {
        const { requests } = data;
        for (const request of requests) {
            await context.store.setItem(`excluded.${request._id}`, "true");
        }
    },
};

const includeRequest = {
    label: 'Enable global headers',
    action: async (context, data) => {
        const { request } = data;
        context.store.removeItem(`excluded.${request._id}`);
    }
};

const includeRequestGroup = {
    label: "Enable global headers",
    action: async (context, data) => {
        const { requests } = data;
        for (const request of requests) {
            await context.store.removeItem(`excluded.${request._id}`);
        }
    }
};

exports.requestHooks = [setHeaders];
exports.requestActions = [exclueRequest, includeRequest];
exports.requestGroupActions = [excludeRequestGroup, includeRequestGroup];