JS: generate paths in source maps relative to .map file location

See KT-19818

compiler/testData/cli/js/sourceMap.args

@@ -1,5 +1,7 @@
 $TESTDATA_DIR$/sourceMap.kt
 -no-stdlib
 -source-map
+-source-map-prefix
+./
 -output
 $TEMP_DIR$/out.js

compiler/testData/cli/js/sourceMap.test

@@ -1,2 +1,2 @@
 // EXISTS: out.js
-// CONTAINS: out.js.map, "sourceMap.kt"
+// CONTAINS: out.js.map, "./sourceMap.kt"

compiler/testData/cli/js/sourceMapEmbedSources.args

@@ -1,6 +1,8 @@
 $TESTDATA_DIR$/sourceMap.kt
 -no-stdlib
 -source-map
+-source-map-prefix
+./
 -source-map-embed-sources
 always
 -output

compiler/testData/cli/js/sourceMapEmbedSources.test

@@ -1,3 +1,3 @@
 // EXISTS: out.js
-// CONTAINS: out.js.map, "sourceMap.kt"
+// CONTAINS: out.js.map, "./sourceMap.kt"
 // CONTAINS: out.js.map, "var log = \"\"\n\nfun foo(x: String) {

compiler/testData/cli/js/sourceMapRelativeRoot.args

@@ -0,0 +1,14 @@
+$TESTDATA_DIR$/sourceMapRelativeRoot/lib/src/lib.kt
+-no-stdlib
+-source-map
+-meta-info
+-output
+$TESTDATA_DIR$/sourceMapRelativeRoot/lib/out/lib.js
+---
+$TESTDATA_DIR$/sourceMapRelativeRoot/main/src/main.kt
+-no-stdlib
+-libraries
+$TESTDATA_DIR$/sourceMapRelativeRoot/lib/out/
+-source-map
+-output
+$TESTDATA_DIR$/sourceMapRelativeRoot/main/out/main.js

compiler/testData/cli/js/sourceMapRelativeRoot.out

@@ -0,0 +1 @@
+OK

compiler/testData/cli/js/sourceMapRelativeRoot.test

@@ -0,0 +1,5 @@
+// EXISTS: $TESTDATA_DIR$/sourceMapRelativeRoot/lib/out/lib.js
+// EXISTS: $TESTDATA_DIR$/sourceMapRelativeRoot/main/out/main.js
+// CONTAINS: $TESTDATA_DIR$/sourceMapRelativeRoot/lib/out/lib.js.map, "../src/lib.kt"
+// CONTAINS: $TESTDATA_DIR$/sourceMapRelativeRoot/main/out/main.js.map, "../src/main.kt"
+// CONTAINS: $TESTDATA_DIR$/sourceMapRelativeRoot/main/out/main.js.map, "../../lib/src/lib.kt"

compiler/testData/cli/js/sourceMapRelativeRoot/.gitignore

@@ -0,0 +1 @@
+out

compiler/testData/cli/js/sourceMapRelativeRoot/lib/src/lib.kt

@@ -0,0 +1,4 @@
+@Suppress("NOTHING_TO_INLINE")
+inline fun foo() = 23
+
+fun bar() = 42

compiler/testData/cli/js/sourceMapRelativeRoot/main/src/main.kt

@@ -0,0 +1 @@
+fun box() = foo() + bar()

compiler/testData/cli/js/sourceMapRootAuto.args

@@ -2,5 +2,7 @@ $TESTDATA_DIR$/sourceMapRoot/foo/file1.kt
 $TESTDATA_DIR$/sourceMapRoot/bar/file2.kt
 -no-stdlib
 -source-map
+-source-map-prefix
+./
 -output
 $TEMP_DIR$/out.js

compiler/testData/cli/js/sourceMapRootAuto.test

@@ -1,3 +1,3 @@
 // EXISTS: out.js
-// CONTAINS: out.js.map, "foo/file1.kt"
-// CONTAINS: out.js.map, "bar/file2.kt"
+// CONTAINS: out.js.map, "./foo/file1.kt"
+// CONTAINS: out.js.map, "./bar/file2.kt"