feat(compiler): basic codegen with source map support

packages/compiler-core/__tests__/codegen.spec.ts

@@ -0,0 +1,20 @@
+import { parse, generate } from '../src'
+import { SourceMapConsumer, RawSourceMap } from 'source-map'
+
+describe('compiler: codegen', () => {
+  test('basic source map support', async () => {
+    const ast = parse(`hello {{ world }}`)
+    const { code, map } = generate(ast, { module: false })
+    expect(code).toBe(`["hello ", world]`)
+
+    const consumer = await new SourceMapConsumer(map as RawSourceMap)
+    const pos = consumer.originalPositionFor({
+      line: 1,
+      column: 11
+    })
+    expect(pos).toMatchObject({
+      line: 1,
+      column: 6
+    })
+  })
+})

packages/compiler-core/__tests__/utils.spec.ts

@@ -1,14 +1,14 @@
 import { Position } from '../src/ast'
-import { getInnerRange, advancePositionBy } from '../src/utils'
+import { getInnerRange, advancePositionWithClone } from '../src/utils'
 
 function p(line: number, column: number, offset: number): Position {
   return { column, line, offset }
 }
 
-describe('advancePositionBy', () => {
+describe('advancePositionWithClone', () => {
   test('same line', () => {
     const pos = p(1, 1, 0)
-    const newPos = advancePositionBy(pos, 'foo\nbar', 2)
+    const newPos = advancePositionWithClone(pos, 'foo\nbar', 2)
 
     expect(newPos.column).toBe(3)
     expect(newPos.line).toBe(1)
@@ -17,7 +17,7 @@ describe('advancePositionBy', () => {
 
   test('same line', () => {
     const pos = p(1, 1, 0)
-    const newPos = advancePositionBy(pos, 'foo\nbar', 4)
+    const newPos = advancePositionWithClone(pos, 'foo\nbar', 4)
 
     expect(newPos.column).toBe(1)
     expect(newPos.line).toBe(2)
@@ -26,7 +26,7 @@ describe('advancePositionBy', () => {
 
   test('multiple lines', () => {
     const pos = p(1, 1, 0)
-    const newPos = advancePositionBy(pos, 'foo\nbar\nbaz', 10)
+    const newPos = advancePositionWithClone(pos, 'foo\nbar\nbaz', 10)
 
     expect(newPos.column).toBe(2)
     expect(newPos.line).toBe(3)