demo/amd/rjs/output/unified/plain-precompiled-build.js
function lookupBlockParam(blockParamId, parts) {
	    this.useBlockParams = true;

	    this.push(['blockParams[', blockParamId[0], '][', blockParamId[1], ']']);
	    this.resolvePath('context', parts, 1);
	  }
function lookupBlockParam(blockParamId, parts) {
	    this.useBlockParams = true;

	    this.push(['blockParams[', blockParamId[0], '][', blockParamId[1], ']']);
	    this.resolvePath('context', parts, 1);
	  }
function lookupBlockParam ( blockParamId , parts ) { this . useBlockParams = true ; this . push ( [ 'blockParams[' , blockParamId [ 0 ] , '][' , blockParamId [ 1 ] , ']' ] ) ; this . resolvePath ( 'context' , parts , 1 ) ; }
[lookupBlockParam]  On stack, before: ... On stack, after: blockParam[name], ...  Looks up the value of `parts` on the given block param and pushes it onto the stack.
[ lookupBlockParam ] On stack before : ... On stack after : blockParam [ name ] ... Looks up the value of parts on the given block param and pushes it onto the stack .