A lightweight javascript library for manual data masking.

Manual data masking?

Manual data masking is a kind of operation that labels and hides sensitive data, creates new text that hides (masks) sensitive information.

Assume that there is a customer comment including sensitive data like swear word, person name, home address...

e.g.

Damn it, The phone I just bought last week has been broken 😠, I need refund
right now, Call me on this phone number: 080808080.

By using manual-data-masking you can do a manual data masking job like this:

Online preview

At the same time, dataMasked and textAfterDataMasking will be generated by manual-data-masking.

dataMasked:

[
  {
    content: "Damn it",
    category: "Swear word",
    start: 0, // start index in text string
    end: 7, // end index in text string
  },
  {
    content: "080808080",
    category: "Phone Number",
    start: 120,
    end: 129,
  },
];

dataMasked can be used to build a dataset for training data-masking related NLP model.

textAfterDataMasking:

*******, The phone I just bought last week has been broken 😠, I need refund
right now, Call me on this phone number: *********.

How to use

ES modules

npm install manual-data-masking

<div id="demo"></div>

import { create as createManualDataMasking } from "manual-data-masking";

const dataMasked = [
  {
    "content": "Damn it",
    "category": "Swear word",
    "start": 0,
    "end": 7
  }
]

const categories = [
  {
    "value": "Person Name",
    "color": "#b6656c"
  },
  {
    "value": "Swear Word",
    "color": "#577eba"
  },
  {
    "value": "Phone Number",
    "color": "#3e6146"
  }
]

const text = "Damn it, The phone i just bought last week has been broken 😠, \n I need refund right now, Call me on this phone number: 080808080."

const $manualDataMasking = createManualDataMasking({
  container: document.getElementById("demo"),
  text,
  dataMasked,
  categories,
  replaceCharactor: "*",
  dataMaskingCharactor: "X",
  maxHeight: 100
})

$manualDataMasking.on("afterDataMasking", (dataMasked, textAfterDataMasking) => {
  console.log(JSON.stringify(dataMasked));
  console.log(textAfterDataMasking);
})
</script>

Script tag:

<script src="https://unpkg.com/manual-data-masking"></script>

<div id="demo"></div>

<script>
  const dataMasked = [
    {
      content: "Damn it",
      category: "Swear word",
      start: 0,
      end: 7,
    },
  ];

  const categories = [
    {
      value: "Person Name",
      color: "#b6656c",
    },
    {
      value: "Swear Word",
      color: "#577eba",
    },
    {
      value: "Phone Number",
      color: "#3e6146",
    },
  ];

  const text =
    "Damn it, The phone i just bought last week has been broken 😠, \n I need refund right now, Call me on this phone number: 080808080.";

  const $manualDataMasking = manualDataMasking.create({
    container: document.getElementById("demo"),
    text,
    dataMasked,
    categories,
    replaceCharactor: "*",
    dataMaskingCharactor: "X",
    maxHeight: 100,
  });

  $manualDataMasking.on(
    "afterDataMasking",
    (dataMasked, textAfterDataMasking) => {
      console.log(JSON.stringify(dataMasked));
      console.log(textAfterDataMasking);
    }
  );
</script>

Options

Property	Description	Type	Required	Default
categories	Categories of sensitive data. e.g. [{   value: "Person Name",   color: "#3e6146" }, {   value: "Bad word" }] Notice: if you don't set color property, the default color will be #577eba	array	true	null
container	Container dom element.	Dom Element Object	true	null
dataMasked	Sensitive data been masked. e.g. [{   content: "Damn it",   category: "Person Name",   start: 0, // start index in text string   end: 7, // end index in text string  }]	array	false	[]
dataMaskingCharactor	Charactor in data masking entity	string	false	'●'
maxHeight	Max height of container, you can scroll the content if the height of container is over max height.	number	false	null
replaceCharactor	Charactor be used to replace the sensitive data	string	false	"*"
text	Origin text content. Attention: please use \n in where you want to wrap a new line	string	true	null

Instance functions

Name	Description
getDataMasked	Get sensitive data been masked $manualDataMasking.getDataMasked()
getTextAfterDataMasking	Get text after data masking $manualDataMasking.getTextAfterDataMasking()

Events

Event Name	Description
afterDataMasking	Registered callback functions will be triggered when new sensitive data been masked. Value of text after masking and data msked can be used inside of the callback function. $manualDataMasking.on( "afterDataMasking", (dataMasked, textAfterDataMasking) => {   console.log(JSON.stringify(dataMasked));   console.log(textAfterDataMasking); });

Vue2 version

manual-data-masking has another version made with Vue.js 2.x: https://github.com/HC200ok/vue2-text-annotation

Build Setup

# install dependencies
npm install
# serve with hot reload at localhost:8080
npm run dev
# build for production with minification
npm run build