Grunt-template-jasmine-istanbul missing dir error - gruntjs

Question

I install grunt plugins grunt-template-jasmine-istanbul
npm install grunt-template-jasmine-istanbul --save-dev
and add to Gruntfile.js as following:
coverage: {
src: ['app/scripts/**/*.js'],
options: {
specs: ['test/**/*.js'],
template: require('grunt-template-jasmine-istanbul'),
templateOptions: {
coverage: 'test/coverage/coverage.json',
report: [
{type:'html',options: {dir: 'test/coverage/html'}},
{type:'text',options: {dir: 'test/coverage/text'}},
{type:'text'},
],
thresholds: {
lines: 75,
statements: 75,
branches: 75,
functions: 90
}
}
}
},
but when running test it shown following warning and no report in test/coverage folder:
my#computer:/share/angularjs-gs$ grunt test:coverage
Running "coverage" task
Warning: "dir" option is required. Use --force to continue.
Aborted due to warnings.
I've also created test/coverage/html and test/converage/text folder. I also view code from plugin's author but cannot find any solution: https://github.com/maenu/grunt-template-jasmine-istanbul-example/blob/connect/Gruntfile.js

Answer 1

I've found it, must wrap coverage object by jasmine, it maybe that coverage used as jasmine plugin but spec and src attribute seems being redundant.
jasmine: {
coverage: {
src: ['app/scripts/**/*.js'],
options: {
specs: ['test/**/*.js'],
template: require('grunt-template-jasmine-istanbul'),
templateOptions: {
coverage: 'test/coverage/coverage.json',
report: [
{type:'html',options: {dir: 'test/coverage/html'}},
{type:'text',options: {dir: 'test/coverage/text/'}},
{type:'text-summary'}
],
thresholds: {
lines: 75,
statements: 75,
branches: 75,
functions: 90
}
}
}