Postman allows you to use CDN libraries in the script session,
so here we are using the CDN equivalent of the handlebar and then passing the compiled template to the postman visualizer
**We can initialize CDN in two ways :**
**First Approach:**
By initializing the CDN in global space using “new Function(cdn)()”
You can see the code below , but this will mess up global scope and can be used only once in the entire run*
// you can call any package with min build in postman
pm.sendRequest("https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.7.7/handlebars.js", (err, res) => {
pm.environment.set("res", res.text());
// intialize the min.js
new Function(pm.environment.get("res"))();
//create template soource
var source =
`{{#ifCond v1 v2}}
{{v1}} is equal to {{v2}}
{{else}}
{{v1}} is not equal to {{v2}}
{{/ifCond}}`;
//you can call methods in the cdn file using this keyword
//here we are registring handlebar
Handlebars.registerHelper('ifCond', function (v1, v2, options) {
if (v1 === v2) {
return options.fn(this);
}
return options.inverse(this);
});
//compile the template
var template = Handlebars.compile(source);
//data to be passed
// try v1 and v2 with same and different values and observe the output in visualization tab
var data = {
"v1": "test",
"v2": "test",
};
// passing the data to template
var result = template(data);
//visualizing it
pm.visualizer.set(result)
})
**Second Approach:**
you can call any package with min build in postman
this initializes the functions in local scope so it won’t mess up the global space and cause issues
pm.sendRequest("https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.7.7/handlebars.min.js", (err, res) => {
pm.environment.set("res", res.text());
// intialize the min.js
eval(pm.environment.get("res"));
//create template soource
var source =
`{{#ifCond v1 v2}}
{{v1}} is equal to {{v2}}
{{else}}
{{v1}} is not equal to {{v2}}
{{/ifCond}}`;
//you can call methods in the cdn file using this keyword
//here we are registring handlebar
this.Handlebars.registerHelper('ifCond', function (v1, v2, options) {
if (v1 === v2) {
return options.fn(this);
}
return options.inverse(this);
});
//compile the template
var template = this.Handlebars.compile(source);
//data to be passed
// try v1 and v2 with same and different values and observe the output in visualization tab
var data = {
"v1": "test",
"v2": "test",
};
// passing the data to template
var result = template(data);
//visualizing it
pm.visualizer.set(result)
})
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