diff --git a/.travis.yml b/.travis.yml
index 877610a5547c..e69bd5b6eeef 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -51,9 +51,8 @@ matrix:
       services:
         - mongodb
       script:
-        - npm run postinstall -- --scope "@loopback/test-repository-mongodb" --include-dependencies
-        - npm run build -- --scope "@loopback/test-repository-mongodb" --include-dependencies
-        - cd acceptance/repository-mongodb && npm run mocha
+        - lerna bootstrap --scope "@loopback/test-repository-mongodb" --include-dependencies
+        - cd acceptance/repository-mongodb && npm test
     - node_js: "12"
       os: linux
       env:
@@ -68,9 +67,8 @@ matrix:
         - mysql -e "GRANT ALL PRIVILEGES ON *.* TO 'test'@'localhost' WITH GRANT OPTION;FLUSH PRIVILEGES;"
         - mysql -e "GRANT SUPER ON *.* TO 'test'@'localhost' IDENTIFIED BY 'test';FLUSH PRIVILEGES;"
       script:
-        - npm run postinstall -- --scope "@loopback/test-repository-mysql" --include-dependencies
-        - npm run build -- --scope "@loopback/test-repository-mysql" --include-dependencies
-        - cd acceptance/repository-mysql && npm run mocha
+        - lerna bootstrap --scope "@loopback/test-repository-mysql" --include-dependencies
+        - cd acceptance/repository-mysql && npm test
     - node_js: "12"
       os: linux
       env:
@@ -79,18 +77,16 @@ matrix:
       services:
         - postgresql
       script:
-        - npm run postinstall -- --scope "@loopback/test-repository-postgresql" --include-dependencies
-        - npm run build -- --scope "@loopback/test-repository-postgresql" --include-dependencies
+        - lerna bootstrap --scope "@loopback/test-repository-postgresql" --include-dependencies
         - psql -U postgres -a -f acceptance/repository-postgresql/test/schema.sql
-        - cd acceptance/repository-postgresql && npm run mocha
+        - cd acceptance/repository-postgresql && npm test
     - node_js: "12"
       os: linux
       env:
         - TASK=test-repository-cloudant
       script:
         # set up docker image and create admin for cloudant.
-        - npm run postinstall -- --scope "@loopback/test-repository-cloudant" --include-dependencies
-        - npm run build -- --scope "@loopback/test-repository-cloudant" --include-dependencies
+        - lerna bootstrap --scope "@loopback/test-repository-cloudant" --include-dependencies
         - cd acceptance/repository-cloudant && sh setup.sh
         - npm test
     - node_js: "12"
@@ -100,9 +96,8 @@ matrix:
       services:
         - docker
       script:
-        - npm run postinstall -- --scope "@loopback/test-extension-logging-fluentd" --include-dependencies
-        - npm run build -- --scope "@loopback/test-extension-logging-fluentd" --include-dependencies
-        - cd acceptance/extension-logging-fluentd && npm run mocha
+        - lerna bootstrap --scope "@loopback/test-extension-logging-fluentd" --include-dependencies
+        - cd acceptance/extension-logging-fluentd && npm test
 
 branches:
   only:
diff --git a/acceptance/extension-logging-fluentd/package.json b/acceptance/extension-logging-fluentd/package.json
index 4518908e7380..34ab1a58de68 100644
--- a/acceptance/extension-logging-fluentd/package.json
+++ b/acceptance/extension-logging-fluentd/package.json
@@ -8,7 +8,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-test-extension-logging-fluentd*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-test-extension-logging-fluentd*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "npm run mocha",
     "mocha": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/acceptance/repository-cloudant/package.json b/acceptance/repository-cloudant/package.json
index 0711d38c5fa8..69c5ae9076cb 100644
--- a/acceptance/repository-cloudant/package.json
+++ b/acceptance/repository-cloudant/package.json
@@ -8,7 +8,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-test-repository-cloudant*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-test-repository-cloudant*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "npm run mocha",
     "mocha": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/acceptance/repository-mongodb/package.json b/acceptance/repository-mongodb/package.json
index 013bac9cc7c4..cda1533e99e9 100644
--- a/acceptance/repository-mongodb/package.json
+++ b/acceptance/repository-mongodb/package.json
@@ -8,7 +8,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-test-repository-mongodb*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-test-repository-mongodb*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "npm run mocha",
     "mocha": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/acceptance/repository-mysql/package.json b/acceptance/repository-mysql/package.json
index ee7138505d69..b9d369c725b3 100644
--- a/acceptance/repository-mysql/package.json
+++ b/acceptance/repository-mysql/package.json
@@ -8,7 +8,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-test-repository-mysql*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-test-repository-mysql*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "npm run mocha",
     "mocha": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/acceptance/repository-postgresql/package.json b/acceptance/repository-postgresql/package.json
index 5a3cd0b0718c..2da2a368789f 100644
--- a/acceptance/repository-postgresql/package.json
+++ b/acceptance/repository-postgresql/package.json
@@ -8,7 +8,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-test-repository-postgresql*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-test-repository-postgresql*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "npm run mocha",
     "mocha": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/extensions/apiconnect/package.json b/extensions/apiconnect/package.json
index 391b859e1ef3..fb61b3cdf3ba 100644
--- a/extensions/apiconnect/package.json
+++ b/extensions/apiconnect/package.json
@@ -9,7 +9,7 @@
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build:apidocs": "lb-apidocs",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-apiconnect*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-apiconnect*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "unit": "lb-mocha \"dist/__tests__/unit/**/*.js\"",
diff --git a/extensions/authentication-passport/package.json b/extensions/authentication-passport/package.json
index 2c74b10fc0b8..283bb8180677 100644
--- a/extensions/authentication-passport/package.json
+++ b/extensions/authentication-passport/package.json
@@ -9,7 +9,7 @@
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build:apidocs": "lb-apidocs",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-authentication-passport*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-authentication-passport*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "unit": "lb-mocha \"dist/__tests__/unit/**/*.js\"",
diff --git a/extensions/context-explorer/package.json b/extensions/context-explorer/package.json
index 6566c7de7fe5..bf3a70d91acc 100644
--- a/extensions/context-explorer/package.json
+++ b/extensions/context-explorer/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-explorer*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-explorer*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-context-explorer*.tgz && tree package && npm run clean"
diff --git a/extensions/cron/package.json b/extensions/cron/package.json
index d8a79a3f5803..a607b6195a6a 100644
--- a/extensions/cron/package.json
+++ b/extensions/cron/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-cron*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-cron*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-cron*.tgz && tree package && npm run clean"
diff --git a/extensions/health/package.json b/extensions/health/package.json
index 2e3bc3b90220..68ee121c336b 100644
--- a/extensions/health/package.json
+++ b/extensions/health/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-extension-health*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-extension-health*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-extension-health*.tgz && tree package && npm run clean",
diff --git a/extensions/logging/package.json b/extensions/logging/package.json
index 9fd77364cacf..73f29bf7bb9f 100644
--- a/extensions/logging/package.json
+++ b/extensions/logging/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-extension-logging*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-extension-logging*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-extension-logging*.tgz && tree package && npm run clean"
diff --git a/extensions/metrics/package.json b/extensions/metrics/package.json
index 19465ed667cb..ab973185bfba 100644
--- a/extensions/metrics/package.json
+++ b/extensions/metrics/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-extension-metrics*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-extension-metrics*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-extension-metrics*.tgz && tree package && npm run clean"
diff --git a/package.json b/package.json
index e075050c418f..ef8f221b950a 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,9 @@
     "typescript": "~3.8.3"
   },
   "scripts": {
-    "postinstall": "lerna bootstrap",
+    "bootstrap": "lerna bootstrap",
+    "postinstall": "npm run -s bootstrap && npm run -s update-ts-project-refs",
+    "update-ts-project-refs": "node bin/update-ts-project-refs.js -f",
     "update-packages": "npm run -s update-package-locks",
     "prerelease": "npm run build:full && npm run mocha && npm run lint",
     "release": "lerna version && lerna publish from-git --yes",
@@ -54,7 +56,7 @@
     "prettier:fix": "npm run prettier:cli -- --write",
     "clean": "lerna run clean && node packages/build/bin/run-clean \"packages/*/dist\" \"extensions/*/dist\" \"examples/*/dist\" \"benchmark/dist\"",
     "clean:lerna": "lerna clean",
-    "build": "node bin/run-lerna run build --sort",
+    "build": "node packages/build/bin/compile-package -b",
     "build:full": "npm ci --ignore-scripts && lerna bootstrap --ci && npm run clean && npm run build",
     "pretest": "npm run clean && npm run build",
     "test": "node packages/build/bin/run-nyc npm run mocha --scripts-prepend-node-path",
diff --git a/packages/authentication/package.json b/packages/authentication/package.json
index 47716d220f2d..ec5188c8997f 100644
--- a/packages/authentication/package.json
+++ b/packages/authentication/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-authentication*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-authentication*.tgz dist *.tsbuildinfo package",
     "integration": "lb-mocha \"dist/__tests__/integration/**/*.js\"",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/packages/boot/package.json b/packages/boot/package.json
index 9574ce2fbafe..ce608e74a2d3 100644
--- a/packages/boot/package.json
+++ b/packages/boot/package.json
@@ -11,7 +11,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-boot*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-boot*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "integration": "lb-mocha \"dist/__tests__/integration/**/*.js\"",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/packages/booter-lb3app/package.json b/packages/booter-lb3app/package.json
index e7397d77ca51..eefad019bfdb 100644
--- a/packages/booter-lb3app/package.json
+++ b/packages/booter-lb3app/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-booter-lb3app*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-booter-lb3app*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-booter-lb3app*.tgz && tree package && npm run clean"
diff --git a/packages/context/package.json b/packages/context/package.json
index 939b50d10fff..43fc904dc009 100644
--- a/packages/context/package.json
+++ b/packages/context/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-context*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-context*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "unit": "lb-mocha \"dist/__tests__/unit/**/*.js\"",
diff --git a/packages/core/package.json b/packages/core/package.json
index 33c851e006ee..4f4cf3fc4333 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-core*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-core*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "integration": "lb-mocha \"dist/__tests__/integration/**/*.js\"",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/packages/http-caching-proxy/package.json b/packages/http-caching-proxy/package.json
index db2be0002526..5faca62b62fb 100644
--- a/packages/http-caching-proxy/package.json
+++ b/packages/http-caching-proxy/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-caching-proxy*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-caching-proxy*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-caching-proxy*.tgz && tree package && npm run clean"
diff --git a/packages/http-server/package.json b/packages/http-server/package.json
index b87bbd8c8b61..685ca6f81069 100644
--- a/packages/http-server/package.json
+++ b/packages/http-server/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-http-server*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-http-server*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-http-server*.tgz && tree package && npm run clean"
diff --git a/packages/metadata/package.json b/packages/metadata/package.json
index d21b545ff64e..c408ff3fa056 100644
--- a/packages/metadata/package.json
+++ b/packages/metadata/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-metadata*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-metadata*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "unit": "lb-mocha \"dist/__tests__/unit/**/*.js\"",
diff --git a/packages/model-api-builder/package.json b/packages/model-api-builder/package.json
index 0616e195ce8f..b6daa15cf696 100644
--- a/packages/model-api-builder/package.json
+++ b/packages/model-api-builder/package.json
@@ -11,7 +11,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-model-api-builder*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-model-api-builder*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "",
     "verify": "npm pack && tar xf loopback-model-api-builder*.tgz && tree package && npm run clean"
diff --git a/packages/openapi-spec-builder/package.json b/packages/openapi-spec-builder/package.json
index 4b94f102306b..d243756a0866 100644
--- a/packages/openapi-spec-builder/package.json
+++ b/packages/openapi-spec-builder/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-openapi-spec-builder*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-openapi-spec-builder*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-openapi-spec-builder*.tgz && tree package && npm run clean"
diff --git a/packages/openapi-v3/package.json b/packages/openapi-v3/package.json
index e121d8d1a0aa..2327ef317a97 100644
--- a/packages/openapi-v3/package.json
+++ b/packages/openapi-v3/package.json
@@ -29,7 +29,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-openapi-v3*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-openapi-v3*.tgz dist *.tsbuildinfo package",
     "integration": "lb-mocha \"dist/__tests__/integration/**/*.js\"",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/packages/repository-json-schema/package.json b/packages/repository-json-schema/package.json
index 7dfd2b38ab18..8ea102d4a263 100644
--- a/packages/repository-json-schema/package.json
+++ b/packages/repository-json-schema/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-json-schema*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-json-schema*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-json-schema*.tgz && tree package && npm run clean"
diff --git a/packages/repository-tests/package.json b/packages/repository-tests/package.json
index a9f9421f46f1..64962deb047f 100644
--- a/packages/repository-tests/package.json
+++ b/packages/repository-tests/package.json
@@ -11,7 +11,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-repository-tests*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-repository-tests*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-repository*.tgz && tree package && npm run clean"
diff --git a/packages/repository/package.json b/packages/repository/package.json
index d1b25ee403eb..e4f792d639c3 100644
--- a/packages/repository/package.json
+++ b/packages/repository/package.json
@@ -9,7 +9,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-repository*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-repository*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-repository*.tgz && tree package && npm run clean"
diff --git a/packages/rest-crud/package.json b/packages/rest-crud/package.json
index 410c6f908e2f..18696cae293f 100644
--- a/packages/rest-crud/package.json
+++ b/packages/rest-crud/package.json
@@ -11,7 +11,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-rest-crud*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-rest-crud*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-rest-crud*.tgz && tree package && npm run clean"
diff --git a/packages/rest-explorer/package.json b/packages/rest-explorer/package.json
index 85a0475abea4..1343e79b8fe5 100644
--- a/packages/rest-explorer/package.json
+++ b/packages/rest-explorer/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-explorer*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-explorer*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-explorer*.tgz && tree package && npm run clean"
diff --git a/packages/rest/package.json b/packages/rest/package.json
index f200f164e6be..083fb2591459 100644
--- a/packages/rest/package.json
+++ b/packages/rest/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-rest*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-rest*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "integration": "lb-mocha \"dist/__tests__/integration/**/*.js\"",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/packages/service-proxy/package.json b/packages/service-proxy/package.json
index c6e3795f38f2..ae57c03e3ee6 100644
--- a/packages/service-proxy/package.json
+++ b/packages/service-proxy/package.json
@@ -9,7 +9,7 @@
   "scripts": {
     "acceptance": "lb-mocha \"dist/__tests__/acceptance/**/*.js\"",
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-service-proxy*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-service-proxy*.tgz dist *.tsbuildinfo package",
     "integration": "lb-mocha \"dist/__tests__/integration/**/*.js\"",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
diff --git a/packages/testlab/package.json b/packages/testlab/package.json
index 766fc3898614..32b6e3b0ac62 100644
--- a/packages/testlab/package.json
+++ b/packages/testlab/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "lb-tsc",
-    "clean": "lb-clean loopback-testlab*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-testlab*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-testlab*.tgz && tree package && npm run clean"
diff --git a/packages/tsdocs/fixtures/monorepo/package.json b/packages/tsdocs/fixtures/monorepo/package.json
index 4cf145837ed9..1507e77d7052 100644
--- a/packages/tsdocs/fixtures/monorepo/package.json
+++ b/packages/tsdocs/fixtures/monorepo/package.json
@@ -3,9 +3,9 @@
   "version": "1.0.0",
   "description": "Root",
   "scripts": {
-    "clean": "node run-lerna run clean",
+    "clean-fixtures": "node run-lerna run clean",
     "bootstrap": "node run-lerna bootstrap",
-    "build": "npm -s run bootstrap && npm -s run clean && node run-lerna run build"
+    "build": "npm -s run bootstrap && npm -s run clean-fixtures && node run-lerna run build"
   },
   "author": "",
   "license": "MIT",
diff --git a/packages/tsdocs/package.json b/packages/tsdocs/package.json
index aa61ce1f3e0d..96d212c4244c 100644
--- a/packages/tsdocs/package.json
+++ b/packages/tsdocs/package.json
@@ -12,7 +12,7 @@
     "document-apidocs": "api-documenter markdown -i ../../docs/apidocs/models -o ../../docs/site/apidocs",
     "update-apidocs": "node bin/update-apidocs",
     "build": "lb-tsc && npm run build --prefix fixtures/monorepo",
-    "clean": "lb-clean loopback-tsdocs*.tgz dist tsconfig.build.tsbuildinfo package",
+    "clean": "lb-clean loopback-tsdocs*.tgz dist *.tsbuildinfo package",
     "pretest": "npm run build",
     "test": "lb-mocha \"dist/__tests__/**/*.js\"",
     "verify": "npm pack && tar xf loopback-tsdocs*.tgz && tree package && npm run clean"