Function compileDeclarationList

packages/compiler/src/render3/view/compiler.ts:351–369

* Compiles the array literal of declarations into an expression according to the provided emit * mode.

(
  list: o.LiteralArrayExpr,
  mode: DeclarationListEmitMode,
)

 * mode.
 */
function compileDeclarationList(
  list: o.LiteralArrayExpr,
  mode: DeclarationListEmitMode,
): o.Expression {
  switch (mode) {
    case DeclarationListEmitMode.Direct:
      // directives: [MyDir],
      return list;
    case DeclarationListEmitMode.Closure:
      // directives: function () { return [MyDir]; }
      return o.arrowFn([], list);
    case DeclarationListEmitMode.ClosureResolved:
      // directives: function () { return [MyDir].map(ng.resolveForwardRef); }
      const resolvedList = list.prop('map').callFn([o.importExpr(R3.resolveForwardRef)]);
      return o.arrowFn([], resolvedList);
    case DeclarationListEmitMode.RuntimeResolved:
      throw new Error(`Unsupported with an array of pre-resolved dependencies`);
  }
}

function stringAsType(str: string): o.Type {
  return o.expressionType(o.literal(str));