Function formatPlaceholder

formatPlaceholder(
text?: null | string,
params?: { [key: string]: any },
): undefined | null | string
Returns the replaced string of the source string (named placeholder) with the given parameters
Parameters
- Optionaltext: null | string
  the source string to inspect
- Optionalparams: { [key: string]: any }
  the parameters to replaced with, in the form of key values
Returns undefined | null | string
the replaced string of the source string
Author
David Hsing
Example
```
formatPlaceholder("foo{bar}", {bar: "bar"});    //  "foobar"
formatPlaceholder("foobar{none}");    //  "foobar{none}"
formatPlaceholder("foobar{none}", {});    //  "foobar{none}"
formatPlaceholder("hello {name}, foo{bar}", {name: "world", bar: "bar"});    //  "hello world, foobar"
```