feat(@gabliam/core): use expression parser for @value

packages/core/package.json

@@ -13,6 +13,7 @@
     "src"
   ],
   "dependencies": {
+    "@gabliam/expression": "^6.1.0",
     "@types/joi": "^13.0.0",
     "caller": "^1.0.1",
     "debug": "^3.0.0",

packages/core/src/utils.ts

@@ -4,6 +4,7 @@ import { ValueValidator, ValueExtractor } from './interfaces';
 import { ValueValidationError } from './errors';
 import { APP_CONFIG } from './constants';
 import { Container } from './container';
+import { ExpressionParser } from '@gabliam/expression';
 
 /**
  * Validate a value
@@ -45,9 +46,18 @@ export function configureValueExtractor(container: Container): ValueExtractor {
     defaultValue: any,
     validator?: ValueValidator | null
   ): any => {
+    let value = undefined;
+    const config = container.get<object>(APP_CONFIG);
+    try {
+      const expression = new ExpressionParser(config).parseExpression(path);
+      value = expression.getValue();
+    } catch {}
+
+    if (value === undefined) {
+      value = _.get(config, path, defaultValue);
+    }
+
     try {
-      const config = container.get<object>(APP_CONFIG);
-      let value = _.get(config, path, defaultValue);
       if (validator) {
         value = valueValidator(path, value, validator);
       }

packages/expression/__tests__/__snapshots__/expression-parser.test.ts.snap

@@ -0,0 +1,77 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`expression evaluator compile should compile an expression an return an evaluator 1`] = `1234`;
+
+exports[`expression evaluator locals should refer to the root context 1`] = `
+Object {
+  "myString": "global context",
+}
+`;
+
+exports[`expression evaluator lookups should look up a doubly nested primitive in the context using dot notation 1`] = `true`;
+
+exports[`expression evaluator lookups should look up a doubly nested primitive in the context using dot notation 2`] = `"boolean"`;
+
+exports[`expression evaluator lookups should look up a nested primitive in the context using bracket notation 1`] = `undefined`;
+
+exports[`expression evaluator lookups should look up a nested primitive in the context using bracket notation 2`] = `"undefined"`;
+
+exports[`expression evaluator lookups should look up a nested primitive in the context using bracket notation literal 1`] = `"hi"`;
+
+exports[`expression evaluator lookups should look up a nested primitive in the context using bracket notation literal 2`] = `"string"`;
+
+exports[`expression evaluator lookups should look up a nested primitive in the context using dot notation 1`] = `"hi"`;
+
+exports[`expression evaluator lookups should look up a nested primitive in the context using dot notation 2`] = `"string"`;
+
+exports[`expression evaluator lookups should look up a primitive in the context 1`] = `1`;
+
+exports[`expression evaluator lookups should look up a primitive in the context 2`] = `"number"`;
+
+exports[`expression evaluator lookups should look up a really nested primitive in the context using bracket notation 1`] = `"bye"`;
+
+exports[`expression evaluator lookups should look up a really nested primitive in the context using bracket notation 2`] = `"string"`;
+
+exports[`expression evaluator lookups should return undefined 1`] = `undefined`;
+
+exports[`expression evaluator lookups should return undefined 2`] = `"undefined"`;
+
+exports[`expression evaluator parse primitives should evaluate a boolean 1`] = `true`;
+
+exports[`expression evaluator parse primitives should evaluate a boolean 2`] = `"boolean"`;
+
+exports[`expression evaluator parse primitives should evaluate a boolean 3`] = `false`;
+
+exports[`expression evaluator parse primitives should evaluate a boolean 4`] = `"boolean"`;
+
+exports[`expression evaluator parse primitives should evaluate a number 1`] = `123`;
+
+exports[`expression evaluator parse primitives should evaluate a number 2`] = `"number"`;
+
+exports[`expression evaluator parse primitives should evaluate a number 3`] = `123.4`;
+
+exports[`expression evaluator parse primitives should evaluate a number 4`] = `"number"`;
+
+exports[`expression evaluator parse primitives should evaluate a string 1`] = `"hello world!"`;
+
+exports[`expression evaluator parse primitives should evaluate a string 2`] = `"string"`;
+
+exports[`expression evaluator parse primitives should evaluate a string 3`] = `"hello world!"`;
+
+exports[`expression evaluator parse primitives should evaluate a string 4`] = `"string"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped double quotes 1`] = `"hello world!"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped double quotes 2`] = `"string"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped double quotes 3`] = `"hello world!"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped double quotes 4`] = `"string"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped single quotes 1`] = `"hello world !"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped single quotes 2`] = `"string"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped single quotes 3`] = `"hello world !"`;
+
+exports[`expression evaluator parse primitives should evaluate a string with embedded escaped single quotes 4`] = `"string"`;