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An package to help de-tokenizing values within our source code when building or debugging SPFx solutions, avoiding having some information hardcoded in the code or relaying on environment variables.


Install the package and save it as a dev dependency on top of a SPFx solution.

npm i --save-dev spfx-detokenize

Now you are all set up and ready to start using the package.

Setting-up the tokens information

Update the gulpfile.js with the following:

  1. Import the module.
const detokenize = require("SPFx-detokenize");
  1. Before the build.initialize(gulp); line, pass an array of Token Object to the detokenize() function and then pass the returned task to the build.rig.addBuildTasks() function.
const replaceTask = detokenize([{
    paramName: "welcomeText",
    token: "$WELCOME_TEXT$",
    files: ["webparts/helloWorld/components/HelloWorld.tsx"]


The detokenize() function accepts an array of 'Token objects' and a name(optional) as parameters.

Token Object

The properties for the token object are:

Property Type Required/Optional Description
paramName string Required Name of the parameter specified in the build command line.
paramDescription string Optional Friendly name for the parameter to be used when prompting the user in case the parameter hasn't been specified though the command line
token string Required Token to be replaced by the specified value within the specified files.
files string[] Required Files where the Token is to be replaced.

Full Example

Here is an example of the final version of a gulpfile.js using the de-tokenizer module.

'use strict';

const gulp = require('gulp');
const build = require('@microsoft/sp-build-web');
const detokenize = require("SPFx-detokenize");

const replaceTask = detokenize([{
    paramName: "appId",
    token: "$AD_APP_ID$",
    files: ["webparts/helloWorld/components/HelloWorld.tsx"]
}, {
    paramName: "resourceURL",
    paramDescription: "Azure Resource URL",
    token: "$RESOURCE_URL$",
    files: [
}, {
    paramName: "welcomeText",
    token: "$WELCOME_TEXT$",
    files: ["webparts/helloWorld/components/HelloWorld.tsx"]




After finishing with all the set-up in the gulpfile.js, you can either run the gulp task and pass the values along, or simply run the task without any values and then provide the vales when prompted.

Passing Parameters on Command line

The values should be provided after the name of the gulp task(serve, build) with the following format --paramName "VALUE".

gulp build --appId "0ae21bb6-5a8f-44ca-95fe-4dd2c05be1c8" 
            --welcomeText "Welcome to JS 231 SP!!!"
            --resourceURL ""
# Serve
gulp serve --appId "0ae21bb6-5a8f-44ca-95fe-4dd2c05be1c8"
            --welcomeText "Welcome to JS 231 SP!!!"
            --resourceURL ""

Without Passing Parameters on Command line

If there is a missing parameter or no parameter has been provided at all, the task will pause and prompt the user for the missing values.

SPFx de-tokenizer request parameter


After running the task, the tokens in the code within the specified files will be replaced by the provided values.

SPFx de-tokenizer result