Error
Looks like something broke!
{% if env == 'development' %}
Message:
{{error}}
Stack:
{{stack}}
{% endif %}
```
#### Custom filters, use macro,block in Nunjucks
koa-error engine tool base on [consolidate](https://github.com/ladjs/consolidate), you can also set consolidate options
> [more-nunjucks-options](https://github.com/ladjs/consolidate/blob/master/lib/consolidate.js#L1436-L1488) > `app.js`:
```js
//...
const app = new Koa();
const nunjucks = require("nunjucks");
const nunjucksEnv = new nunjucks.Environment(
new nunjucks.FileSystemLoader(path.join(__dirname, "tpl"))
);
// add filters
const filters = require("./filters");
for (let [k, v] of Object.entries(filters)) {
nunjucksEnv.addFilter(k, v);
}
//...
app.use(
koaError({
//...
template: path.join(__dirname, "tpl/error.html"),
options: {
nunjucksEnv, // custom nunjucks env
},
})
);
```
`filters.js`:
```js
module.exports = {
// define filters function here
stringify(..args){
return JSON.stringify(...args);
}
//...
};
```
`tpl/error.html`:
```html
{% include "./com.html" %}